Transformers #80.5
Yes, you read that correctly. IDW is picking up the Transformers storyline where the original comic run left off. From the site:
The wait is over - after a 20-year hiatus, IDW proudly returns to the original Transformers comic book universe, picking up right where 1991's Transformers #80 left off! Optimus Prime, Grimlock, Kup, Hot Rod and all your favorite Generation One Transformers characters charge into the future as fan-favorite writer Simon Furman and legendary Transformers artist Andrew Wildman present Transformers #80.5! Reflecting back on the dizzying highs and the terrifying lows of the original run of Transformers comics, Optimus Prime watches over a Cybertron that hasn't faced Megatron for decades. But that peace shudders to an end, as we dive headlong into July's Transformers #81!
Sadly, Free Comic Book Day is over for another year, but it never hurts to see if the comic shop has extra copies. It might show up in one of the eventual trades, too.