Don't know if you guys see the pattern.
MTX-2, MTX-2 ProSpec
MTX-3, MTX-3 ProSpec
MRX-3, MRX-3 Works
MRX-4
Thus, those who wish to buy the ProSpec, hold on your bucks to your dearly life, as MTX-4 should come out not too long.
Just my big jumbo mumbo quarters!