Jason_Ryock
Vice Admiral
In the Port Broughton article, on page 51, right on the top it reads "...displaying the first ten Midways." I guess that means that more Midways were built or are at least planned.
I think that's also refrenced by the articles heading "Last of the Mega Carriers" where it goes on to say it was the last of the Flight IIA Midway-class heavy carriers.
That could mean there was a Flight IIIA or a Flight IIB Midway-class produced, however. Possibly as a battleship instead, as we know there are "modern" Midway-class carriers around that differ "only visually" from the originals.