He will come back to play out the string of a lost season.
They could announce tomorrow he's out for the year and as long as it doesn't effect next year, I would not care at all.
Romo could have played the last couple of games in 2010 after breaking his collarbone (much later in the season then), but with the team out of contention, it wasn't worth risking him.
But the Cowboys can still win this division. It's not a lost season. The Cowboys have lost four games. So have the Eagles and Commanders, and the Giants could be at four losses after playing the suddenly hot Saints Sunday. Plus, they are 2-1 in the division and still have the Commanders twice.
I know it very hard to stay optimistic, but there's plenty of time to make a run. Last year the Panthers started 3-8-1 in an awful division. They went on a tear and haven't lost a regular season game since. Why can't a talented Cowboys team that's only getting healthier do the same?