So this is going out on a limb, but it's a possible one. With Wave 3 (be it complete or incomplete) now teased, we have some pictures of what the new flotillas will look like.
In the teaser for Assault Carriers, a bit of a squint shows that the new Imperial officer is Agent Kallus, from Star Wars Rebels. This (to my knowledge) is the first time that we've seen a character from the show in Armada, who wasn't also in the original trilogy or established canon. By coincidence, the latest X-wing Wave VIII was also based significantly on the show (releasing the Ghost and Inquisitor's TIE), bringing these characters into that particular fold for the first time.
We also know that a couple of product numbers are missing from the Armada line-up. It's a long shot, but what if the SWM16 and SWM17 are for ships shown in the Star Wars Rebels show? And, if so, could they be the Imperial Light Cruiser (Arquitens) that Kallus uses for the Imperials, and either the Pelta-Class frigate that the Rebels use as Phoenix Home, or the Hammerhead Corvettes they acquire?
It's probably nothing, but you never know...
