I read that a few months back that he was having issues, and I guess things aren't getting any better.
It's gotta be a humbling experience for someone like that, who was by-far the best guitar player (especially blues guitar) of his era. Very sad, but it certainly won't diminish the standard he set long ago in the music industry.
Oddly enough, I ran into an old guitar teacher of mine just a few weeks ago, he was working the counter at local music shop and I was in there shopping for a keyboard attachment. I asked how he was doing, hadn't seen him in several years. I was shocked to learn that he can't even play anymore, said that he was having issues with his hands and he was also having trouble remembering chords. Not sure what was going on, he scheduled to have some tests done to figure out what the problem was.
He was a phenomenal guitarist, always playing weekend gigs, etc. and he absolutely loved playing Clapton... in fact - when I first started taking lessons from him - he was teaching me how to improvise with some of Robert Johnson's stuff, who (as you probably know) was king of blues guitar as far as Clapton was concerned.