From Pro Hockey Talk:
Montreal forward Max Pacioretty will have a phone hearing with the NHL Monday morning for this hit on Pittsburgh defenseman Kris Letang during the third period of the Penguins’ overtime win in Montreal Saturday night. Pacioretty broke Letang’s nose on the play, yet wasn’t whistled for a penalty
Per Mike Colligan, this means Pacioretty will only face at max a five-game suspension:
We think Pacioretty should be suspended for two reasons.