Here's an update. I have some new videos and a picture.
He's doing okay and he's making a good recovery. He still travels, and he still does interviews and makes public appearances.
In this video from last year (2013) Michael discusses "Amyloidosis and Stem Cell Research" during a public appearance.
This first video is over 18 minutes long, you can hear the detail and quality in his voice throughout his speech. (I know that he sounds like a gravelly-voiced, tired, and elderly Pterano if he were a pteranodon in his 70's and had his own room in a medical clinic/care center for the elderly, talking to visitors.)
But, the good thing is that Michael is doing okay.
Here is the video:
https://www.youtube.com/watch?v=_cF0pY9IsiMAnd more recently, here he is at a photo session on January 11, 2014. (at the time of this post, this is the newest video I could find of him on youtube)
https://www.youtube.com/watch?v=tsJ8Fg37d1QAnd a picture, taken in (I believe) May 2014:
http://michaelyork.net/images/Michael-York-5-2014.jpg As you can see here, he has more hair now than he had in the older pictures from early 2013.