I've not had a chance to play with WinRT yet. I just wondered whether anyone knew if TAPI is part of the WinRT API now?
According to MS currently TAPI is not part of WinRT although the information is preliminary and rather likely to change over time... for details see http://msdn.microsoft.com/en-us/library/windows/apps/hh464945%28v=vs.85%29.aspx