Not a remake, a new story about how he was captured at the beginning of the original series.
"When I finished writing The Sandman, there was one tale still untold: the story of what had happened to Morpheus to allow him to be so easily captured in The Sandman #1, and why he was returned from far away, exhausted beyond imagining, and dressed for war," Gaiman said in a DC press release. "It was a story that we discussed telling for Sandman's 20th anniversary, but the time got away from us. And now, with Sandman's 25th anniversary year coming up, I'm delighted, and nervous, that that story is finally going to be told." - NG from newsarama article
http://www.newsarama.com/comics/sdcc-2012-neil-gaiman-returns-to-sandman.html