Pricing and a few more details are up at https://www.dcuniverse.com/coming-soon/ and you can preorder now. Launch date is still just “Fall 2018”.
$7.99/month, or $74.99/year. Includes their new original shows Titans, Doom Patrol, Swamp Thing, Young Justice: Outsideres, and Harley Quinn, as well as a selection of existing stuff from the DC animated movies, cartoons, and live action movies. Content will rotate “quarterly, or close to quarterly”. And it includes some selection of digital comics, I didn’t look hard for specifics on whether that’s new or old or what.
I have pretty much no interest in a new way to watch older stuff because I already own everything DC related that I care to watch. But at $8 a month, I’ll probably subscribe for a few months just out of curiosity. I’ll admit I kind of want to see this train wreck for myself.