I am going to assume your question is in regards to TeamPulse? (Mention of build server made me think perhaps you were talking about TFS Work Item Manager?)
I am not familiar with TeamCity or Hudson. If they are purely build and source control related (as appose to work management) we currently have no plans to expand TeamPulse in this direction for the near future. If they are for work management our TFS sync engine was built with plug-ability in mind so in the future we could allow for syncing with other systems.
All the best,
the Telerik team