The 'new' Prime
http://i.imgur.com/qhKGaq7.png
Still has that 2D, almost Flash-looking "style" to him as Bumblebee. Interesting that they're releasing these pics now, even though they say they aren't doing justice to the animation style they want to employ in the actual show. But I guess they have to start promoting it with something.
I'm guessing that they will be going for a cell-shaded 3D CGI style.