Second party UK developer Relentless Software is working on two new unannounced PS3 projects due for 2010, according to a presentation given to Brighton University. 

The presentation dates back to March 2009, and tells a little bit about Relentless Software and how to get a job in the games industry.  It details all three of their major 2009 releases - Buzz! HQ for Home, Buzz! Quiz Worlds for PS3, and Blue Toad Murder Files for PSN.  It later goes on to detail some unannounced PS3 projects for 2010, a is a PSN title due for an Easter 2010 release, and a full PS3 release due in fall 2010.

Following the release of Blue Toad Murder Files, Relentless Software began teasing a secret project on their site, which is presumably one of these two projects.  Relentless clearly states that this new project won't be based on either Buzz! or Blue Toad, but is "something that everyone can enjoy and plays to our strengths in the social game genre".