aaaand they've announced the mysterious ghost as well as the TRU sets
This is the DST sets, all four Ghostbusters, Rowan (when he was cute), Slimer, and Slimette!
And then TRU is getting all four busters (doesn't appear to be variants, but as we know from the Predator lines there could be some changes to them), Rowan in his full evil body, and the Stay Puft Parade Balloon