Marvel have informed retailers that House of X #1, Powers of X #1 and the first three issues of History of the Marvel Universe will be bigger than initially announced or solicited.
Both Powers of X #1 and House of X #1 are growing from 40 pages to 56, and History of the Marvel Universe is growing from 36 to 48 pages.
The publisher didn't specify if this meant more sequential pages, more ads, or some kind of backmatter for each issue. Marvel did say the price of each remains unchanged.
House of X #1 and History of the Marvel Universe #1 comes out July 24, followed by Powers of X #1 on July 31, then History of #2 and #3 on August 21 and September 18, respectively.