I know this is a little late, but I try to space out my posts and this one fell through the cracks! Anyhow, Microsoft has purchased devBiz the makers of Team Plain. If you are unfamiliar with Team Plain, it is a web based interface to Team Foundation Server. Current TFS owners may download the product for free but each user must have a CAL. There is also a Beta version for Visual Studio 2008 (codename Orcas) that is on the Orcas VPC.
Happy Coding!