According to writer Tom King, for Wal-Mart to carry DC’s new Giant line, the oversized issues had to contain exclusive content. He had this to say to Newsarama :
“My goal in doing the Superman Walmart book is to put new customers into comic shops. You like this Superman, go check out this Batman,” King tweeted. “Why exclusive then? That was the price we had to pay to get this opportunity. I don’t like it, but I think it’s worth it.”
King’s 12-part “Up in the Sky” serial is scheduled to be drawn by Andy Kubert, and debut in September’s Superman Giant #3.