Join Date: May 2008
Location: In space, targeting you with plasma cannons. (Actually I am from France)
It's not in GW's way to remove units from the game, as far as I know. The only recent example I can think of is Necron Pariahs, who were "removed" but whose minis could still be used for Lychguards.
But yes, maybe they will just allow some units to deepstrike for a cost and the Spore that brings them on the table goes out in a big "SPLOTCH" when it hits the ground.