PlayStation 4 and Xbox 720 'out by 2011'

The president of games firm Crytek has said he believes the next round of consoles from Sony and Microsoft will launch in three or four years' time.

During his keynote speech at the Leipzig GC Developer Conference, Cevat Yerli said: "The PlayStation 4 and Xbox '720' will arrive in 2011 or 2012, we think.

"This is just our estimate - we don't know, and even if Microsoft and Sony told us, I couldn't say because it would be under NDA."

He added: "But we think in three to four years' time, although there are good reasons why it should be 2010 already... but we'll see."