There have been a few threads about product number gaps that have appeared in the Legion expansion announcements over time, the last being one I did on SWL30, which turned out to be the Downed AT-ST. So far there have been no number skipped over, so no reason to believe there will be now. So, with the BIG news today, we have several number gaps:
SWL35 Occupier Tank
SWL36 Landspeeder
SWL37 Sabine
SWL38 BooskS
SWL39 Rebel Veterans
SWL40 Tauntan Riders
SWL41 UNKNOWN (likely Imperial veterans?)
SWL42 UNKNOWN (likely new Imperial Support? Dewbacks?)
SWL43 UNKNOWN
SWL44 Clone Wars Core Set
SWL45 UNKNOWN (likely Clone Wars?)
SWL46 UNKNOWN (likely Clone Wars?)
SWL47 Phase I Clone Troopers
SWL48 UNKNOWN (likely Clone Wars?)
SWL49 B1 Battle Droids
SWL50 UNKNOWN (likely Clone Wars?)
SWL51 Upgrade Card Pack
So that is SEVEN product numbers that are currently unknown. I think we can safely say that 41 and 42 will be Imperial units along the lines of the Rebel Veterans and Tauntan Riders. SWL43 might be some other Neutral expansion?
Given the original release of the game, 45, 46, 48 and 50 are likely Clone Wars related, two are probably the Droidekas and BARC Speeder. But what about the other two? Maybe some Heavies for each new faction? Or they could get things rolling sooner with a Special Forces unit for each new faction, or an Operative for each?