Updated models with AMD graphics options expected in early 2017.
Prototype Mac Pro and Intel PowerBook Spotted
Now, it seems a prototype Mac Pro has been put up for sale on eBay, claiming to be an early 2.4GHz dual Quad-Core processor machine. The machine is said to even be able to run Snow Leopard. Photos of the machine are provided and it does contain a red motherboard typical of Apple's prototype machines:
Meanwhile, another interesting prototype machine was found by a forum member back in May. jpo287 purchased a PowerBook that carries an Intel processor and an iSight camera -- features that were never released in a "PowerBook" branded machine. The machine carries a build date of November of 2005 which was two months before the first Intel MacBook Pros were released. For whatever reason, this unreleased PowerBook contains a blue motherboard:
More photos and speculation can be seen in the original discussion thread.