It seems that since yesterday BioWare has some mysterious countdown on their website
(as well as various sub-sites). What the countdown is for is anyone's guess. Maybe something Mass Effect, maybe something Dragon Age, maybe something for an unannounced project. Who knows. It could even be for Star Wars: The Old Republic, but considering that it's not on the SWTOR site that seems doubtful.
All we really know is that it should hit zero around noon EST* on Monday. So hopefully we'll know more then.
* Actually, doing the calculations myself (I got that target time from another site) I arrive at roughly noon BST. So I'm not exactly sure what's going on, though it should be noon somewhere.