Yep, he died a little while ago... joining the growing list of Gen1 voices who are now not with us...

Roger C. Carmel - Bruticus, Cyclonus, Motormaster, Unicron (post movie)
Phillip Clark - Dead End, Tantrum, Abdul Fakkadi, Auggie Cahnay
Rege Cordic - Menasor, Quintesson Judge (movie)
Scatman Crothers - Jazz
Walker Edmiston - Inferno
Ron Feinberg - Headstrong
Ron Gans - Dragstrip
Linda Gary - Chromia
Ed Gilbert - Blitzwing, Thrust, Shawn Berger
Jim Gosa - Abominus
Johnny Haymer - Highbrow, Swindle, Vortex
Buster Jones - Blaster
Stan Jones - Scourge, Pounce, Weirdwolf, Lord Zarak
Casey Kasem - Bluestreak, Cliffjumper, Dr Archeville, Teletran 1
Aron Kincaid - Sky Lynx
Bert Kramer - Computron
Chris Latta - Starscream, Defensor, Reflector, Skullcruncher, Wheeljack, Sparkplug, Snake
Don Messick - Gears, Ratchet, Scavenger
Jeff McKay - Fireflight
Leonard Nimoy - Galvatron (movie)
Tony Pope - Wreck-Gar (post movie)
Ken Sansom - Hound
Tony St James - Blot, Brawl, Cutthroat
Robert Stack - Ultra Magnus (movie)
Lionel Stander - Kup (movie)
John Stephenson - Huffer, Windcharger, Thundercracker, Alpha Trion, Kup (post movie)
Orson Welles - Unicron (movie)


It sort of gives you an idea of the generational change in the Voice Actor industry in the 80s to the 90s, with a lot of the 80s cartoons being voiced by the veterans of the industry and most are now gone or close to it... but just 10 years later with the Beast Wars cartoon, we've only lost one person so far (Cambell Lane, the voice of Rampage), because that new batch of Voice Actors that came in around then who are still around today, were all fairly young (20s-30s).