Update (4:00 P.M. GMT):

Following on from rumours and conjecture this morning, it's been confirmed: Halo 4 will launch worldwide on 6th November, 2012.

A press release heralded the return of Master Chief, and promises the next instalment aims to set "a new standard for blockbuster interactive entertainment".

Halo 4 will be released on Tuesday, 6th November, according toIt claims that Microsoft and the game's developer, 343 Industries , will announce the launch date before midday (EST time), so sometime before 5pm UK time.The report also suggests that Microsoft will once again be showing off its wares on late-night American TV – Epic Games' Cliff Bleszinski appeared on the show to promote Gears of War 3 last year – but this time Halo 4 is being linked with an appearance on Conan O'Brien.These rumours seem to be backed up by some recent Twitter activity. Alison Stroll, a senior producer at 343 Industries,, "A little birdy (or was it Andy?) told us @TeamCoco will have some big Halo 4 news tomorrow. Stay tuned! #incoming #wakeupjon". Meanwhile, Major Nelson, "Look for #Halo4 news on the way in the next 24 hours. Hint: @TeamCoco plays a part!"