Amazon have added a listed for Volume 4 of IDW’s Optimus Prime ongoing series. This collected comics volume compiles issues 15-21 of the Optimus Prime ongoing, collecting the seven issues making up the story arc “The Falling”. The volume does not, however, contain the 2018 annual – it might be contained in a later volume.
Transformers: Optimus Prime Volume 4 is due for a release in November 2018.
The details of the solicit are listed below:
Darkness falls over Cybertron as the legendary Onyx Prime returns, throwing the planet into chaos! What does this mean for Optimus Prime–and the Earth?
As Onyx and his comrades sow panic and dissension on Cybertron, Windblade defends an already tense planet against a secret that could shatter it forever, Soundwave questions a fragile alliance, and Optimus confronts a mystery that goes back millions of years.
Collects Transformers: Optimus Prime issues #15-21.
Lucas35
OP must have another volume since Barber has confirmed that he will have another arc after "The Falling".
John Barber on Twitter
kmc
That makes a thick TPB but hey, LL will go to issue 25 with a same sized volume (#19-25) so is OP ending at #21 or have another thinner volume?
hardlurk
Amazon has put up a listing for the Optimus Prime Volume 4 trade paperback: https://www.amazon.com/dp/1684053633/
According to the listing, the book will be available in November of 2018 and will collect Optimus Prime issues #15-21 (but not the 2018 Annual).