Yesterday Teamprise announced the availability of a Java SDK for building TFS based applications.  You can read about it here: http://www.teamprise.com/news/2007/05/teamprise_announces_java_sdk_f.html  Availability is targeted for later this year.

They seem to be taking the same approach we took.  They had to build a set of APIs to build their client on anyway so they are making those APIs available for other people to use to build custom applications on.  It's always amazing to me how many custom development tools teams need to help make their development processes efficient.  In last month's Dogfood stats post I listed the 80 or so custom applications that people in DevDiv have built against TFS.  It's great to see a Java based SDK offering available, making this task that much easier for so many more people to address their needs.

Brian