http://www.tvshowsondvd.com/news/Pirates-Darkwater-The-Complete-Series/14334
Note that these were just rumors at the time and nothing was finalized with Warner Brothers yet. But see below for updates!
But in the story above (about the release of "The Pirates of Dark Water"- the complete series on DVD!
-coming out as a "Manufacture on Demand" title from WB on August 31st.), there's mention of some other shows WB may be looking at for release later on.
According to TVshowsonDVD.com, the rumor is that WB is looking at Thundarr The Barbarian (1980s classic!) and Josie and the Pussycats in Outer Space (1970s not-as-classic but cool anyway!) for September.
And they may even be looking for some Halloween-themed shows for October and there's rumors going on about either (or maybe both) of the 1973 and 1992 cartoon series of The Addams Family coming to DVD!
And of course, there's always stuff in the works we don't know about.
We'll see how it goes. 
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