Rhode Island Comic-Con has announced that Tom Kenny (Transformers Animated Starscream + clones) and Bill Fagerbakke (Transformers Animated Bulkhead) will be guests at the show this year.
https://www.facebook.com/rhodeisland...nf&pnref=storyThis is already in addition to Frank Welker and Peter Cullen from G1/Prime, as well as Will Friedle (Transformers Prime/RID Bumblebee).
The convention is November 6th, 7th, and 8th in Providence, Rhode Island. Of note, Welker/Cullen is a separate package that is only $150 total for the both of them!