VGLeaks, the WikiLeaks of videogame hardware specs, claims to have the system’s “roadmap,” which contains dates as far back as June 2011.

If the roadmap (listed below) is to be believed, then PS4/Orbis is scheduled for release this year, Q4.

• 2011 June/July – PC with Win7 64-bit and a “jailbroken” ATI r9 graphics card
• 2011 Sept/Oct – PC with Win7 64-bit and a “jailbroken” ATI r10 graphics card
• 2012 Q1 – disclosure to more developers
• 2012 E3 – potential unveiling window start
• 2012 Jul – devkits for engineers writing OS
• 2012 Q3 – first true hardware prototype devkits
• 2013 E3 – potential unveiling window end
• 2013 Q4 – launch

The VGLeaks roadmap comes to us from the NeoGaf forums. The post also contained a “rumor roundup” of the PS4/Xbox 720′s hardware specs:

PS4 “Orbis”

• AMD APU Solution (Jaguar/Steamroller), 4 cores, Higher Clock than X720/Durango
• Maybe AMD 8000 series GPU solution
• 2-4GB GDDR5
• Launch Fall 2013/Early 2014

Xbox 720 “Durango”

• AMD Jaguar 1.6GHZ 8-Core
• AMD 8800/8900 GPU
• 8GB RAM (DDR3?)
• Launch 2013

The NeoGaf poster points out that readers should focus less on how much RAM the two consoles have, but rather what kind. GDDR RAM, the poster claims, would make PS4/Orbis  the more graphically-inclined system, while the Xbox 720′s DDR3 RAM would give its OS an edge performing tasks.

Again, this is all speculation and rumor.

Source: VGLeaks