In anticipation of CliffyB's appearance on Jimmy Fallon to premiere Epic's latest title, posted an advert for 3 on the Dashboard.

Cliff Blezinski's appearance was delayed until Monday but Microsoft forgot to adjust for this in time - resulting in the leak.

The Dashboard blunder has been quickly removed but other sources confirmed to Edge the information Microsoft released, saying that is indeed due out April 2011 as has been speculated.

Rumour has it that do have another new IP to announce this month. According to GamePro the new title will be produced by their newest acquisition, Studios. This game is set to be announced later in the month.

By Ewan Aiton