Depends at what level you're expecting support, you can get DVCPro footage from the HVX 200 into Vegas via Raylight or CineForm DIs but no MXF support.
Full HVX 200 support is limited to Edius and Avid.
Possibly (although unlikely but who knows) given the work on better XDCAM support in V7 it might happen which would be good, hopefully support for Thompson's InfinitiCam as well.