I suspect the bundle will be one of the new shuttles/runabouts, Defiant interior, Bajoran monk outfit, and maybe a costume or two we haven't seen yet like O'Brien's "sleeves rolled up" variant, Sisko's "no jacket" option, or something like a Cardassian suit. (Might as well.)
I heard a rumor it was a new escort. I hope it is small like the defiant if it is a new escort.
It's not a rumour, one of the developers posted on the forums. We're getting an Andorian Escort, the Merian and a T5 Akira, but we have no idea when.. I'd guess the Akira will be first since it would be the easiest to add and I think there's a good chance it'll be in one of these updates, perhaps along with the Defiant interior.
I'm really looking forward to the Merian and the Vesta (which is presumably a science ship) though, those ships are long overdue!