Oh man! That's terrible news. I met him at Pass last year. Such a nice guy and so humble. Spoke about his work on management studio, and his plans for updating the Guru's guides later this year.
Jim Gray (exactly 1 year ago) and now Ken.
Edit: Just dug up a photo from pass
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)SQL In The Wild
: Discussions on DB performance with occasional diversions into recoverability
We walk in the dark places no others will enter
We stand on the bridge and no one may pass