The Walmart listing (from the other Movie News posting) says that it only turns into a 're-entry vehicle', so it is just like the 2007 Preview figures (Optimus and Starscream). I guess it's like Scorponok, in that it doesn't really transform into anything (in the movie), but needs to have an alt-mode for the toy.

So I don't think those photos of Ravage with wings, is actually the alt-mode. Could well be, but I wouldn't be surprised if it isn't it's 're-entry mode'.