My money's on the Vigil. FFG is smartly cross-pollinating between their licensed products, and the Vigil made the Age of Rebellion starship list. It's big enough to be a little longer (and probably a modest amount wider) than the CR-90, so it should reinforce the "we bring bigger cap ships" thing without being ludicrously expensive or deal-breakingly un-shelvable for retailers.
The Vigil being 255 metres long as opposed to the CR-90's 150 metres, means that it would require new packaging along with a new movement template (to prevent it from fishtailing everywhere). It's also going to be massive on the playing surface. I want to see it, but it is probably in the realms of unlikely.