What I've heard/read already:
Hasbro has an Arcee prototype (Deluxe) at least.
Electrostatic Soundwave flagged as a Deluxe recolour/slight remold with Ratbat.
"Golfire Grimlock" as Voyager recolour.
Hydrodrive Bumblebee as new mold Voyager.
Blackout planned as a Voyager.
Activators Soundwave (haven't seen this one personally - links/pics?).
There's a Cybertron Ratchet prototype somewhere out there.
Wingblade Prime (again haven't seen it but have heard of it a few times from a few sources) as Voyager. Leader class makes more sense IMO especially in light of the Magnus Hammer and the Leader class full-o'-gimmicks philosophy, but then Hasbro and I don't always agree on toys or else we'd have Wreck-Gars and Shockwaves a-plenty over here...
So taking into account Hasbros repaint love we'll likely see an Ironhide retool from the Cybertron-mode Ratchet(s), and probably a Wasp from at least one of the existing Bumblebee molds.
Also IIRC Classics/Universe were rumored to be doing a Wheeljack (& Rhinox yay!) sometime comparatively soon, meaning probably no Wheeljack from Animated.
What I want personally is Arcee, Team Chaar, and Team Rodimus, especially Red Alert, Strika and Cyclonus and all of the extras on Cybertron, and Omega Supreme, and Lugnut Supreme, and...