It was originally announced as "indefinite". They were waiting until after he has the surgery to give a solid timeline of recovery.
Here's the interview Treliving did on the radio just after it was announced:
https://www.sportsnet.ca/960/pinder-...very-timeline/
The first step was to get him to Calgary, which it sounds like has happened. Next is getting the surgery scheduled and done. Then, they'll have a better idea of the recovery timeline.