peekay4
Under 121.423 FAA is mandating UPRT pilot training for all Part 121 ops by no later than March, 2019. This means flight simulators must be updated by that date to accommodate "extended envelope" training, and accordingly the FAA simulator standards + qualifications are being completely revamped. Final rule on the new standards is expected early next year.
My understanding is that UPRT training can already be readily accomplished on (most recent qualified) simulators now as this doesn't require any additional data. The only simulator update required is the "IOS Toolkit page". The extended envelope data is required for full stalls for which the current OEM supplied data is somewhat lacking, although just what is being provided is still unclear (to me).