Office 15 beta is rumored to be set of next week. This is highly possible seeing Steve Ballmer said at the announce of Surface that the Office Division got an interesting announce coming very soon too.
Microsoft have got a press event on Monday and USA Today suggests that they will be unveiling Office 15 there!
Unveiling the beta, or a "preview" as they're more likely to call it. Rumors are suggesting, however, that the final versions of Office and Sharepoint won't actually be released until May 2013, a significant delay from what started as late 2012 and then early 2013. Thurrott "confirmed" this, but we'll probably know for sure on Monday.
Yes it is, but Microsoft is pretty clear in their post it's just "Preview" and not "Consumer Preview". And I don't think the company who actual makes it goes run around with a fake name.
Hmm how to say... I don't take what WinUnleaked staff says as true since some months. And I have good reasons for that. So he's maybe right, maybe wrong. We will know soon.