Hey guys, MacRumors newbie here.
First off, in regards to the posted image, I personaly think this is real and not some sort of Photoshop / Render. (I say that because I use Photoshop every day and can spot fakes miles off! Also a dab hand at 3D.) Annnnyway, my reasons.
If you notice, the dock is the right way up for the user, not upside-down of which it would be if it was a reflection. This rules out the big 'fake' claims from people judging on first impressions.
iPhone/Touch has already shown the world how how acurate it can be when it comes to moving something. I ask any of you with one to load a large image and move it about on screen, and tell me how deadly accurate the movment is. It's only a slight bit of code to make to turn that into a trackpad with added bonuses. Hell, the iPhone screen is very, VERY slim and can display videos/images/whatever, so why not use that as a trackpad? Would probably even fit in a current MacBook/Pro (with slight modifications) and sit flush with the body depth wise.
The image represents what alot of people have guessed. Black around the screen, Black keys on an alu body. Proportion wise and thinks lining up (edge of keyboard to the edge of the device, for example) are perfect and that to me cuts out a Photoshoped image attempt.
I vote it's the real deal. The only thing I can think of is moving the mouse about and accidently tapping a dock object could get very, very stressfull after a while, so I hope its an option and can keep the dock on screen instead. I've used Windows all my life but used a Mac for the last 12 months and I am converted. Selling my PC and by the time I get the monies these new Macs should of been released (Mid October.)
If they come out sooner, then that's a BIG bonus! Either way, I'm giving Apple money in Oct, new MacBook or not.
EDIT: Forgive me if I am wrong, but that's a MacBook, not a pro? I say that because of the positioning of the DVD drive, and how close to the edge and central opening slot it is? Well, judging by looking at a current MacBook!