Thanks to faceboook user Jon Robert for posting up a new G.I. Joe and Transformers Shared Universe Comics Poster. There are a few details in here that are of note.
Duke #1 on sale December 2023
Cobra Commander #1 on sale January 2024
Transformers #1 on sale October 2023
It looks like the new Universe is called “The Energon Universe” and will indeed combine both brands. How deep that goes is yet to be seen. Stay tuned for further details as they become available.