B-wings, A-wings, Y-wings?

Its been a year since ships got added to the game and while many odd ships like the Geonosians, multiple Jedi Starfighters, and no less than two different U-wings there's still no sign of some of the most basic ships from even the original trilogy!

Are Y-wings, A-wings, B-wings, TIE Bombers etc. being held back for some as-yet-unannounced major update to the ship content?