Nintendo has formally announced the Nintendo 3DS Conference 2011 event, a press conference that was first revealed through Bloomberg a few weeks back.

Set to be held at Tokyo Big Site on September 13 at 12:00 noon, the event is described as a "Nintendo 3DS new product announcement conference." This presumably means that we'll get a look at the latest lineup of 3DS-related product.

Unlike last year's Nintendo Conference event, this year's event will be viewable by the masses via a Ustream and Nico Nico Video live broadcast. Access the conference page on the day of the event for details on how to watch.