According to a report over on Kotaku, Raven Software has dismissed 40 employees. Activision neglected to respond to the purported number in a supposed statement given to the blog, citing Raven is "realigning its workforce to better reflect the studio's upcoming slate." The developer recently concluded work on Singularity.
Kotaku offers that this "realigning" is so that Raven can focus on creating downloadable content -- the studio was reported to be working on DLC for Call of Duty: Black Ops back in May. We're currently digging for more and will let you know what we hear back.