Basically yes, as the PowerCore since version 1.5 and upwards, the Powercore platform has offered full support for virtual instrument plug-ins in the VST format, and since version 1.7 and upwards, full support for virtual instrument plug-ins in the Audio Units plug-in format.
As with effect plug-ins, PowerCore virtual instrument plug-ins are exclusively for use with PowerCore's dedicated DSPs. Native virtual instruments in VST / Audio Units format will not run on TC PowerCore DSPs. Why not? Click here for details.