This is purely decending into the realm of speculation that it is related to Nier, but Yosuke Saito, producer of Nier which was released on the XBox360 and Playstation 3 last year, has just made a comment on twitter, teasing his readers that there was apparently going to be a big announcement this Friday (Today).
Considering that his twitter display picture is a Skeleton Emil (A character from the game) and used the #nier Hash tag, it seems more then likely something will come out of it.
Honestly, I am not that keen on seeing a sequel to this series or anything, I think the game wrapped up nicely and doesnt need expanding. However, a game similar to it with a bunch of subtle game references, new characters and a simple yet engaging storyline would be more then welcome. Yonah going out of her way to save her Daddy from the Black Scrawl anyone?