AGM-114R is going to be (has already become) the only Hellfire model. Tiger's were brought with Mike models, the general purpose model, although could fire Kilo's (anti-tank) or Novembers (thermobaric) with no issues or software changes.
The Romeo replaces all three with a multi-mode warhead. It needs software changes because of the warhead selectability -although only minor ones for M299 launchers (which we put onto Tiger). We did Romeo certification years ago onto Tiger.
Bottom line, if you want an AGM-114 today, it's going to be a Romeo.