According to a collection of rumours rounded-up by Andriasang, Nintendo will make a big announcement on 13th September.

A Japanese analyst told Bloomberg that Nintendo share prices had increased on the back of reports of a 3DS-related event to take place on 13th September, two days before the Tokyo Games Show where Nintendo once again will have no major presence.

There's no real clue as to what the announcement could be, but as always rumours suggest an 'extremely big' game will be revealed for the first time.

The rumour mirrors last year's excitement around the 29th September reveal of the 3DS price and release date.

Nintendo has not announced any press conference or media event for this date but we'll keep you informed.