Just FYI, for those knocking Kilmer's appearance, he's recovering from oral cancer. That, and he basically lost his voice for quite a while, too. A little over a year ago a friend of mine was at work after hours and a co-worker was still there with a friend who had come to visit. My buddy could overhear most of their conversation, but only when he got up to leave and walked past them did he realize the co-worker's friend was Val Kilmer. Said he sounded pretty bad and not at all like himself. Though, it sounds like Kilmer's definitely on the mend now and recovering, but just know that at one point his appearance got so bad that he had to wear a scarf because of the surgeries and what not. It's not like he let himself go or went crazy or anything.
I have no idea if he'll be in good enough shape to film next year, but I do know that one of the earlier drafts of the script had his character using a cane and being kind of sick or out of commission or whatever. So at one point they were planning on leaning into it, then apparently wrote him out altogether when it got worse. But I can confirm that the current draft has him back in, I just don't know to what extent. Hopefully he can make a full recovery and be ready to go, and if his Instagram is any indication, it appears as if he's at least game...