Gaiman made a (very much) surprise announcement at the Vertigo panel hosted by DC Comics at the San Diego Comic Con this week saying that there was one more big story in him for the character. For fans of the series, this new mini-series will be the capper to their collections.
This from Vertigo (which is a DC imprint) executive editor Karen Berger:
As for the general DC brass, yeah, they're pretty happy to have one of the greatest comic authors aver back in the fold too.
Now, before you get too excited- there's no release date as of yet for the series' first issue and there isn't even an official title. Although, for fans of Sandman and Gaiman, I doubt that will temper enthusiasm too much.