Earlier this morning, BioWare co-founders Greg Zeschuk and Ray Muzyka announced during an internal meeting their plans to leave BioWare. While parent company EA hasn't issued an official statement, the news comes from rather reliable sources close to the studio.
As of now, we still don't know much about the situation or why Zeschuk and Muzyka are leaving BioWare. According to a post on the official BioWare Blog, the co-founders are simply retiring.
BioWare's last several titles, while successful, have sufficiently rattled the gaming community for a myriad of reasons. Dragon Age II won over new fans but alienated much of the Dragon Age: Origins crowd, as Mass Effect 3 ended Shepard's trilogy with what many felt was a deeply unsatisfactory conclusion. BioWare Austin's Star Wars: The Old Republic was met with mixed reviews and has lost much momentum since its launch late last year.