Dan Moseley, dev lead for msbuild, wrote a debugger for msbuild while on leave(!) back during the 2010 cycle. While it ultimately couldn’t be fully completed and tested to be an official feature, it is in the product with a switch to enable it (it’s off by default).
Grant has posted a set of reports that help you understand what’s going on in the TFS warehouse and cube in Team Foundation Server 2010 so that you can deal with issues such as field collisions, which can be very tedious to handle since out of the box we don’t provide easy ways to figure it out.
Allen Clark has announced the publication of the first release of the TFS 2010 SDK. This represents a significant improvement in the documentation for the TFS API, and he will be releasing updates to it on a recurring basis. The first release is small (relative to the size of the TFS API),