The specifications of PlayStation 4 developer kits from January 2013 have reportedly been revealed by official Sony documentation leaked to Kotaku.
In addition, the information - which is said to be provided by the same person who attempted to sell a pair of next gen Xbox development kits on eBay last year - supposedly reveals plans for a new controller and a fresh approach to user accounts. The PS4 specs
System Memory: 8GB DDR3 Video Memory: 2.2 GB GDDR5 CPU: 4x Dual-Core AMD64 "Bulldozer" (so, 8x cores) GPU: AMD R10xx Series Ports: 4x USB 3.0, 2x Ethernet Drive: Blu-Ray HDD: 160GB Audio Output: HDMI & Optical, 2.0, 5.1 & 7.1 channels
As we revealed last week, Sony is working on a new controller for PS4, although some developers are said to be working with - and dev kits support - existing Sixaxis and DualShock 3 pads, as well as PS Move.
The new controller is believed to retain the four traditional face buttons, two analogue sticks and shoulder triggers of older PlayStation pads, as well as vibration and improved motion-sensing. But it's also said to feature a capacitive touch pad, like that found on the back of Vita, capable of recognising two-point multi-touch.
In addition, the controller itself can reportedly be "clicked" to make an additional input button, and also features a new "Share" button. While this button's purpose is unclear, it may be linked to a new user account system.
According to Kotaku, PS4 will support "multi-user simultaneous logins", allowing multiple users to be signed into accounts simultaneously on a single console, meaning that they could all unlock Trophies while playing a co-op game.