At some point last week, somebody posted a beta version of Office for Mac onto torrent sites, and at least two tech bloggers jumped on the opportunity to take an early look at it.
Whitson Gordon on Lifehacker mostly has praise for the new look, which adopts the Ribbon interface element that first debuted in Office 2007 for Windows. Ironically, Gordon declares that the Ribbon helps make Office 2011 "so much more Mac-like than its Office for Mac predecessors."
Current Mac Office users, on the other hand, will be disappointed by Gordon's finding that performance is no better than the previous version -- though he notes the beta isn't particularly stable, either, so it may be too early to judge.
Meanwhile, over at Boy Genius Report, Michael Bettiol also praises the Ribbons, saying "they just make life so much easier."
Bettiol has also been busy taking screenshots, and he's posted 53 of them in a gallery.