No matter what you think the reason is, IDW appears to be collapsing the Transformers portion of their Hasbroverse. Who knows what the future of Transformers comic books holds after this? I’m sure it’ll go out with a bang here.
“The end is nigh. The Darkest Hour has come. Optimus Prime stages a desperate gamble as the world-eater, Unicron, approaches Windblade’s homeworld-but that’s just the appetizer. The main course is Cybertron (with a side of Earth)… and it’s starting to look like no force in the galaxy can stop the end from coming.”