Disclaimer: I'm not Kobe Bryant, and can't fathom the physical capabilities of his body.
As a former college athlete who tore an ACL I will weigh in here. Kobe's warrior mentality has the potential to do more harm than good here. This is a complicated injury that will start to feel better long before it is. I've been around a lot of torn ACLs, and I'd say the majority re-injure and prolong recovery by doing too much way too soon. I do think he can come back and be a great player still, but he has to take the emphasis off time and put it on getting that tendon as strong as it can be. He's extra vulnerable to tearing it again now. I'd like to think he has the best trainers in the world that are going to drill this into his brain, but someone of his competitive nature gets into a lot of trouble when they wake up and think "Hey, this feels really good today. I think I'm gonna try to run." Despite what we think, 35 is still pretty young, young enough that if he rehabs properly he should be able to come back and play very well. I don't know how bad it is, but I think a return date of early 2014 is definitely feasible.