From a couple of sources, just 10 days before the American Toyfair, which is likely to release all these officially.

From the French part of the Hasbro website comes three One-Steps that were recently revealed through the game App. No toy images though, but the descriptions of each reveals that Fracture is a motorcycle (for anyone like me who didn't know).
Drift, Fracture and Thunderhoof
(Fracture is the Decepticon that was previously noted as not having a beast-themed robot mode.)

And from some unknown database, a list of upcoming items with Hasbro product numbers, has also been revealed.

One-Step
Springload (B4652)
Quillfire (B4653)

Legion Class
Black Bumblebee (B2976)
White Sideswipe (B2977)
Windblade (B4681)
Clampdown (B4862)
Thunderhoof (B4683)
Drift (B4684)
Patrol Mode Strongarm (?????)

Warrior Class
Fracture (B4686)
Megatronus (B4687)


(Sigh)... the start of the meaningless redecos beings already.