TFS 2010 lets you rename work item type defintions
Have you ever created a work item type and later on wanted to change the name to something different? Then you know the pain this will result in… Add new type definition, migrate data from old type to new (yes, most of that done by hand since work item ids change and so on) and finally delete the old work item type. Ohhh…
Now with TFS 2010 it is possible to rename a work item type definition. Using the command-line tool witadmin.exe you can specify the renamewitd argument followed by the details about the work item type to rename:
Excellent!