This issue is a variant of Action Comics (DC, 2011 series) #1 [Standard Cover Edition]. There exist further variants.
"Rated T Teen."
"Printed by Transcontinental Interglobe, Beauceville, QC, Canada. 3/16/12. Fifth 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 May 2012 titles, not the November 2011 ones).
Clark calls in his Glenmorgan story to a "Mr. Taylor," presumably George Taylor. Clark's landlady tells him a trio of friends came by, possibly the Legion of Super-Heroes founders.
The mystery woman from Flashpoint #5 appears on page 26.