I just found this on xmodsource and knew everybody had to see it. So far it just looks like some new bodies and not a new chassis, like I was hoping for. And two of the bodies aren't even new. They are rereleasing the 65 mustang and corvette Z06. They are also releasing some new zip zaps. And the GTR is an actual body.
Here is the link:

link

They guy that posted it just joined the forums over there so I don't know how reputable the source is, but the pdf file looks pretty real. And at least this will liven things up again around here.