It appears that a reported document leak from AMD included details on what Sony is currently working with on the Playstation 4, code-named "Orbis", development kits. A "hive of more than 90 PDFs" about the next-gen console hit Wednesday from notorious leaker "SuperDAE".
The dev kit specifications are the latest as of January 2013 and highlight some changes made since the last PS4 dev kit leak last year. For starters, the console is powered by an AMD "4x Dual-Core AMD64 'Bulldozer'" CPU with an AMD R10xx "Southern Islands" GPU with an odd 2.2 GB of video memory. This is a development kit that so its very unlikely we'll see that in the final retail release of the Playstation 4.
Speaking of memory, the main system memory is listed at 8 GB but the speed - DDR5, for example - is unknown. Meanwhile, the hard drive is reported to be 160 GB. Again, this is for a development kit. We believe that the system memory will likely be reduced while the hard drive size will be doubled at least.
Here are the reported specs of the PS4 development kit:
System Memory: 8GB
Video Memory: 2.2 GB
CPU: 4x Dual-Core AMD64 "Bulldozer" (so, 8x cores)
GPU: AMD R10xx
Ports: 4x USB 3.0, 2x Ethernet
Audio Output: HDMI & Optical, 2.0, 5.1 & 7.1 channels
Details on the PS4 controller were also revealed following information last week that Sony was trying to emulate the control scheme of the PS Vita. For the next-gen console, the controller will feature a capacitive touch pad either on the front of back. It's unknown which currently but the back seems likely.
The PS4 controller will also feature the same tilt motion controls and vibration as the PS3 version but also has a "Share" button whose function is currently not known.
Interestingly, Sony will finally catch up to the Xbox 360 by allowing multiple users to sign on to the PS4 at the same time and earn trophies and the like. Every time a user connects a controller, they will be prompted to log in to a PSN account just as Microsoft does with its console.
Both the Playstation 4 and Xbox 720 are currently expected to launch some time this fall. Baird analyst Colin Sebastian recently predicted that the PS4 will launch this October followed by the Xbox 720 in November. Both are expected to arrive with starting prices in the $350 to $400 range according to Sebastian. It's possible that we will see announcements for both prior to E3 in June.