Via IGN by way of The Beat comes news that DC Comics' Wildstorm imprint plans to cancel its ongoing Worlds of Warcraft and Starcraft series in favor of, you guessed it, ongoing graphic novels.
The release does not indicate whether the graphic novels will share continuity between the volumes. This is key, in my opinion; if they don't share continuity, then this isn't much different than IDW's line of unrelated Star Trek miniseries, for instance -- just a bunch of "specials" under the banner of "original graphic novels."
If they do share continuity, then hold on to your horses, Mary -- that would mean another comics series released solely in trade format by DC Comics. If once is a chance and twice is a coincidence, I'm looking for number three ...
You can fit what I know about these two series on the head of a pin, but here's upcoming World of Warcraft: Panderans and Starcraft hardcovers which might be these projects (shipping sooner than Superman: Earth One, too!).
The Wildstorm blog The Bleed has a brief mention of the graphic novel switch; ComicBookResources' Robot6 blog also weighs in on Wildstorm and the Superman: Earth One details.