Well, well... Hmmm.. Here's what I think...
The figures will be from TDK, not BB as HT said so you can rule out anyone who wasn't in TDK.
HT usually announces 2-3 Figures at a time. I think we'll see 2.
Also, rule of thumb: HT (usually) won't announce a variant of a Figure which hasn't been released yet so I don't think we'll hear about a TDK Batman Variant.
HT knows this Film is hot so they want to cash in NOW. And they know Joker is the hottest so a V2 Joker is a viable candidate.
Who was the Central Figure in TDK?
Harvey. I'm guessing we WILL see a Harvey/TF 2 in 1! This is a very easy figure to develop, all they need is a HS variant. The Body and outfit are easy as hell and there's plenty of time to sculpt a second TF HS. This is not a year in development piece like the V2 BB which used a whole new body and redesigned suit. Plus HT knows what Aaron looks like so they've had plenty of time to have that sculpt prepared. The horror sculpt is also no biggie, it is a standard horror sculpt ( spenser did one in a week) so I see no problem with HT having it ready for release by year end.
They may have to figure out how to do a damaged look suit but that is the toughest part I think. They may simply design some kind of webbing to slide over half the suit or maybe offer a second suit jacket. don't know.
So it will be Harvey/TF 2 in 1.
Plus either
2) Joker Variant
2A) Scarecrow
or
2B) Swat Gordon
I'm not sure we'll see an Alfred or Lucius quite yet. Anyway, I would be happy with a Harvey and Swat Gordon for now, makes a nice set.