This issue is a variant of Superman (DC, 2011 series) #1 [Direct Sales]. There exist further variants.
"Printed by Transcontinental Interglobe, Beauceville, QC, Canada. 4/20/12. Third Printing."
The non-editorial content of this printing differs greatly from the first printing, with house ads, advertisements, and the DC Comics All Access column all different (based on the July 2012 titles, not the November 2011 ones).
A re-colored (primarily gray) version of the first printing cover.
The mystery woman from Flashpoint #5 appears on page 3.