Though Bumblebee really should be a VW bug, old or new, I guess the Autobots are overall okay. Not so sure why Bumblebee is so specific...I don't follow car models like most guys, oddly, so I have no idea what a Camaro is, at least not by memory.
I figured Megatron should be a tank, he could at least still kind of resemble his G1 cartoon Megatron form, aside from tank treads. Or he could be like the G2 comic/toy form which was a tank, just not brightly coloured. Of course there have been many different forms of Decepticon leaders named Megatron (so is therefore less iconic) and Bay may be out to do his own thing but hopefully the voice and personality scream "Megatron" no matter what he looks like.
I guess it's too early for full confirmation of anything, but at the moment the list isn't consistently decriptive. What do they mean by "bastard version - Kennywave"? Why is Scorponok just a "minion", and even if so, can't they just say "scorpion", which was pretty much mentioned outright in the Aint-It-Cool-News report on one animatic sequence? How is an ambulance not an emergency vehicle, or is this some kind of semantics thing? Why is a police car a Decepticon? Why two Decepticon tanks? If there are to be similar forms they should've had another jet which could've been Thundercracker and/or Skywarp. And another gripe, wasn't Bonecrusher one of the Constructicons which made up Devastator? That may be a minor one, even if Devastator is as great as he's always made out to be, but Bonecrusher as a mine-clearing vehicle...what exactly is a mine-clearing vehicle and why is it that? Are they expecting a lot of land mines in this movie?
The Autobots aren't too bad, like I said, but they have more Decepticons and they've taken more liberty with them. I certainly hope that I like Starscream and Soundwave, because they have personalities (yes, even "unchrasamatic" Soundwave) that are memorable.
You may begin your "OMG G1 IS OVERRATED STOP WEARING THOSE G1 TINTED GLASSES G1 ANIMATION MAKES ME PUKE" retort/rant now, Terra.