When will UML state diagrams be added to the tool set

The UML diagrams supported in the feature pack for VS 2010 Ultimate seem great - but incomplete. I noted that in one of the forums about a year ago there was a statement made that the state diagrams were a much requested item and may be included in a future
release. When will this happen?

Source: http://social.msdn.microsoft.com/Forums/en-US/vsarch/thread/39fbafc3-b021-457c-9722-3601fee7fa04

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