Gibbard, Scanlon retirement conferences

A propos our poll of significant moral philosophers: T.M. Scanlon officially retires the end of this academic year, and Harvard is organizing a conference in his honor.  Allan Gibbard retired at the end of the last calendar year, and Michigan is also hosting a conference about his work coming up in May.  (Both these impending retirements were noted in the fall 2014 PGR, so I've not included them in the recent updates.)