The big news this weekend, MMO-wise, was World of Darkness. Ever since CCP (developers of EVE Online) and White Wolf (creators of the various World of Darkness tabletop roleplaying games and such) merged it was pretty much known that CCP was working on a World of Darkness MMO. And that was pretty much all everyone knew. But this weekend during The Grand Masquerade, which is as I understand White Wolf's official conference, CCP officially announced their next MMO: World of Darkness (though some sources report it as "World of Darkness Online").
Read more details after the break (as well as an off-screen video).