I just saw the news on ESPN so I don't know about the severity of injury or what source has declared it season-ending, but that seems like a long time. I know he has had multiple problems over the last few years but he has a full 4 months until the playoffs. Unless he sustained substantial damage, that time frame seems lengthy. I get they may be taking into account his history and thinking longterm (although they should go for broke this year). The risk was always health (and coaching), especially Lopez' and Williams' foot/ankle problems.
Regardless, sad news for the NBA. Too many major injuries that will alter the playoffs. I thought if healthy Chicago and Brooklyn could actually be playing in the ECF against each other.