When new keywords have been introduced into the rules reference, they usually showed up on unit cards that were released more or less consecutive.
There are allready two units with "Wookiee Trooper", but the keyword does not have any effect yet.
It may be that it was introduced for some GAR unit we will see later next year, but I'd say that would be less likely than it being connected to the second rebel unit that will come with Lando (Lobot might be another obvious choice, of course).
So what could it be?

Another generic or named character with "Direct Wookiee Trooper"?
A Raddaugh Gnasp fluttercraft?
An Oevvaor Jet Catamaran as a transport for Wookietroopers (maybe a little bit too long)?
Another brand of Wookiee Warriors with other weapons and upgrades thar are exclusive to Wookieetroopers?

Firstly, why would it have to be a Rebel Wookiee unit? Wookiees are a likely include for GAR as well.

Secondly, as this is (presumably) the last rules update from FFG it could be rules that were intended to be included for a much later product, but were released now instead of later simply owing to the AMG switchover.

If the "Wookiee Trooper" unit type was introduced to interact with some other special rule, the Keyword intended to interact should also have been added.

2 hours ago, Caimheul1313 said:

Firstly, why would it have to be a Rebel Wookiee unit? Wookiees are a likely include for GAR as well.

Secondly, as this is (presumably) the last rules update from FFG it could be rules that were intended to be included for a much later product, but were released now instead of later simply owing to the AMG switchover.

If the "Wookiee Trooper" unit type was introduced to interact with some other special rule, the Keyword intended to interact should also have been added.

It could be a GAR unit, but the next 8 expansions are allready more or less known. SWL 74 - 77 will be Anakin, Maul and the 2 Specialists.
SWL 78 to 81 will be Lando, Kallus, one Rebel and one Imperial expansion. That has allready been confirmed in interviews.
That means a GAR Wookie expansion could come no earlier than SWL 82.
It would be rather unusual to introduce a new keyword for a release that early.

It is also certain that the rules update was written without the knowledge that the authors would be fired instantly after finishing it.
They got the information on the same day they were layed off.
There is no reason why they would have introduced new keywords earlier than they used to do it.
I am not aware of any keyword that was published 2 or 3 month beofre the unit came out.

2 hours ago, Caimheul1313 said:

Firstly, why would it have to be a Rebel Wookiee unit? Wookiees are a likely include for GAR as well.

Secondly, as this is (presumably) the last rules update from FFG it could be rules that were intended to be included for a much later product, but were released now instead of later simply owing to the AMG switchover.

If the "Wookiee Trooper" unit type was introduced to interact with some other special rule, the Keyword intended to interact should also have been added.

I don't know what the next 2 GCW releases are, but I'm 80% sure the next few releases are Yoda (probably with Direct: Wookiee Trooper) or some other wookiee-appropriate character and a GAR Wookiee unit with "Wookiee Trooper only" upgrades that will also be in a new card pack.

It doesn't have to be due to a new unit though, an upgrade is equally likely, such as an "upgrade pack" for using Wookiee with GAR.

In general, we have been getting rules addition on a just in time basis (or very late), but introducing a new trooper type as part of the V2 RRG makes some sense, especially as a change that effectively has no innate effect.

[Edit: It could further have been part of a draft, not meant to be included in this release, but since the devs were laid off they couldn't fix it. Recall that the FAQ was a bit of an omnishambles, being changed fairly significantly the day after their initial release. Also, since they were dramatically changing the Wookiees anyway, it makes some sense to include the zero effect errata change of the trooper type rather than change them again later, or risk the change not being released in time for a later unit.]

Heck, the reason for the change could be the opposite, that Lando has a Command card that is meant to only affect standard troopers, so changing the trooper types keeps the Wookiees from being eligible.

It would be nice if they didn't just keep giving Clones better versions of Rebel gear. They already have a better ATRT, would get annoying if that started to be the same for other units like Wookies.

3 hours ago, Big k said:

It would be nice if they didn't just keep giving Clones better versions of Rebel gear. They already have a better ATRT, would get annoying if that started to be the same for other units like Wookies.

I don't necessarily mean a better, GAR exclusive Wookiee upgrade, just a unit card allowing identical Wookiee Warriors to be used with GAR, or the inclusion of a new Wookiee soldier unit that is usable in both armies.

But hard to say if any longer term plans than the units already announced have been scrapped...

2 hours ago, Caimheul1313 said:

I don't necessarily mean a better, GAR exclusive Wookiee upgrade, just a unit card allowing identical Wookiee Warriors to be used with GAR, or the inclusion of a new Wookiee soldier unit that is usable in both armies.

But hard to say if any longer term plans than the units already announced have been scrapped...

Wel the ATRT for Clones is definitely better than Rebel one. They definitely get more bang for their buck than the 10 points extra they pay.

11 hours ago, Caimheul1313 said:

It doesn't have to be due to a new unit though, an upgrade is equally likely, such as an "upgrade pack" for using Wookiee with GAR.

In general, we have been getting rules addition on a just in time basis (or very late), but introducing a new trooper type as part of the V2 RRG makes some sense, especially as a change that effectively has no innate effect.

[Edit: It could further have been part of a draft, not meant to be included in this release, but since the devs were laid off they couldn't fix it. Recall that the FAQ was a bit of an omnishambles, being changed fairly significantly the day after their initial release. Also, since they were dramatically changing the Wookiees anyway, it makes some sense to include the zero effect errata change of the trooper type rather than change them again later, or risk the change not being released in time for a later unit.]

Heck, the reason for the change could be the opposite, that Lando has a Command card that is meant to only affect standard troopers, so changing the trooper types keeps the Wookiees from being eligible.

That is all true, but I still think the far more likely option is a connection to the upcoming rebel unit. Even if the keyword it is connected to a new upgrade, a corresponding GAR Wookie unit could only be relaeased after the upcoming 4 GCW expansions. Lando has no special connection/disconnection to Wookies other than Chewie as far as I know.
There has allready been some speculation about an imperial heavy that is a closed transport as the expansion that comes with Kallus in another thread.
The Oevvaor would be a fitting counterpart, even though it might be too long and has to be sized down like the T-47.

I also thought about some negative effect of the keyword, like an enemy effect of the the new imperial unit that affects only Wookies or something.
A connection to the rebel unit that will probably be spoiled during the next weeks is still much more likely.
This has been the pattern for all new keywords so far.

I think they were regretting old keywords like Expert Climber and wanted to upgrade everything to Scale in the cleanest way possible. So the Wookie Trooper, trooper type was the easiest way to recon everything on their unit card with one keyword instead of going in and tweaking everything, though they still added a few more bits to it to finish the upgrade.

If they do more wookies in the future it will be cleaner, but that isn't even up to the same Dev Team anymore. I think it is impossible to predict what will come after the 4 ready to go Rebel expansions, because we could see a complete overhaul to the game once it moves onto the new studio. Until we see what they do with it, we really can't predict what is next.

What is interesting is Chewie was already sort of decent before these buffs, after these buffs he is a very solid Operative option for the Rebels, even without his command cards or being with Han. I think they've costed him so that Team Work with Han is just a bonus, the same with his command cards, and no longer factored into the overall price of his unit anymore, because unlike K2 he can be taken without Han, and you were paying for the privilege to do so. And since the expansion of the Rebel's Commander options beyond the main trio, Chewie's cards were becoming more and more likely to just not be possible to play in the lists people wanted him in.

3 hours ago, Big k said:

Wel the ATRT for Clones is definitely better than Rebel one. They definitely get more bang for their buck than the 10 points extra they pay.

The Rebel AT-RT surges to crit and is much better within the faction. Cross-faction comparisons don't really work.

3 hours ago, M.Mustermann said:

The Oevvaor would be a fitting counterpart, even though it might be too long and has to be sized down like the T-47.

The T-476 is pretty much spot-on scale-wise.

2 hours ago, Nithorian said:

I think they were regretting old keywords like Expert Climber and wanted to upgrade everything to Scale in the cleanest way possible. So the Wookie Trooper, trooper type was the easiest way to recon everything on their unit card with one keyword instead of going in and tweaking everything, though they still added a few more bits to it to finish the upgrade.

Scale and Wookiee Trooper have nothing to do with each other.

2 hours ago, arnoldrew said:

The T-476 is pretty much spot-on scale-wise.

I don't get it...

22 minutes ago, thestag said:

I don't get it...

I doofed up when writing T-47. My point is that many people think the T-47 in Legion is too small because they don't know how big it actually is. It is VERY small, and the model in Legion is pretty much spot on.

3 hours ago, arnoldrew said:

Scale and Wookiee Trooper have nothing to do with each other.

I think it has to do with the fact that they were already changing a significant amount of text on the card, might as well toss in another small change while they were at it. Especially if the next intended unit who cared about Wookiee troopers introduced no other new mechanics. Releasing an entire RRG just to change the trooper type would be a bit of overkill (although doable with the digital format).

@M.Mustermann The reason for excluding "Wookiee troopers" wouldn't necessarily be for flavour reasons, but rather for balance reasons.

Unlike with the AT-RT, I would expect GAR Wookiee Warriors to only differ in the faction symbol honestly.

Edit: we also have no way of knowing if AMG is going to introduce a sliding scale for vehicles, or keep with the current scale. They haven't said anything one way or the other, and only time will tell.

Edit 2: it is also conceivable that an early draft had Scale made as an inherent keyword for Wookiee Troopers. Then they later changed the design, but left the new Wookiee Trooper unit rules in, since they functionally don't have any effect. Again, we had a prior version of the FAQ released, which was fixed because the devs were still around. Here that isn't possible.