Microsoft recently announced "System Center 2012 R2 Preview Datacenter/Private Cloud" available for evaluation here.
What's new with VMware management by System Center 2012 R2 Preview, you ask ?? The answer is simple - nothing. No NEW functionality has been added to System Center 2012 R2 Preview as it pertains to VMware management. (Remember, "previews" are subject to change before General Availability is released).
For more info on what's new in System Center 2012 R2 Preview, check here.