I have been a bit confused about this, there has been some discussion on organissimo, but only today I realized it's actually a fact that Jack Wilson has died early in October - the following post from another board has been repeated, in this recent organissimo discussion:
Jack Wilson, a Jazz pianist and composer who played tenor saxophone, vibraphone and organ, with such musical luminaries as Dinah Washington, Sarah Vaughan, Jackie McLean, Sammy Davis Jr. and Sonny & Cher, died Friday, October 5, 2007, in Northport, NY.
His death, at the Northport Veteran’s Administration Medical Center, was caused by complications of diabetes, said his wife, Sandie Boerum-Wilson, of Sayville, NY.
Here's the correct wiki entry (there's another one for an english pianist of the same name).
I love Wilson's album Something Personal (Blue Note, reissued on CD in their Connoisseur Series). Wilson has another disc out on Blue Note, Easterly Winds (also part of the Connoisseur Series), which I still have to get. And Freshsound Records have reissued his fine album done for Vault in 1966, Ramblin' (out of print, alas).