It is being release as a Beta to denote that it still needs further testing but is “stable.” It was important to get this release into the community because v1.3 choked on SSRS 2008 installations. Please kick the tires and check the engine before putting into a Production setting.
“We just release the 1.4 beta of TFS Admin Tool on Codeplex. It’s the first release in over a year. Its big feature is that is provides support for SQL Server 2008 which had not been previously supported. The 1.4 final version will follow shortly as will hopefully a 1.5 and just as important to me a 2.0 version to start to be worked on in parallel to the 1.x releases.” – Michael Ruminer