Action Comics #17, the original 'last issue' of Morrison's mega-arc, has been pushed back a couple of weeks and trimmed from 48 pages to 40. This will be the issue with the Terry Dodson variant cover.
Action Comics #18 is the 'new' last issue of the run, is solicited to be released in early March (2 weeks after Action #17) and carries the cover at the top of the post. This book will be 48 pages.
As a huge fan of this Morrison run, I can't complain about getting a whole other issue. I also think this will allow Morrison space to not only tell a satisfying ending but also maybe add a coda or epilogue of sorts, expanding this story into something more cosmic, something more messianic.
Here is a peek at the Dodson cover which looks great.
This arc keeps growing and that makes me a happy reader.