Wow! This is pretty shocking news coming already this year.
Ron Asheton as you may or may not know was the guitarist of the Stooges are their Self Titled debut album, 2nd album Fun House and their latest album, The Weirdness while playing bass for them on Raw Power. His impact on punk rock and music in general probably shouldn't be trivialized in something like this other than to mention it.
On a more personal note, Asheton's guitar playing hugely influenced my guitar playing as well as serving as a huge inspiration to a previous band which I did called Walk Like Ghosts. We worshipped the Stooges at the time and loved his guitar playing. It is times such as these that make me realize how much other people can influence you.
RIP Mr Asheton...You will be remembered.