It isn't on HBO Max yet, so no. I wonder when it'll show up there. I watched the previous movies in the current, loose "Tomorrowverse" continuity recently. Superman: Man of Tomorrow was the best by a wide margin, which is bad considering that it was the first. Justice Society: World War Two wasn't bad. Batman: The Long Halloween was faithful to a story I didn't like in the comics, and I wish they'd done an original take on Batman as interesting as their take on Superman. The Green Lantern movie was okay but flawed, and the nominal lead character John Stewart often felt like a supporting player in his own movie. And it's weird how much these movies jump around the continuity they supposedly share, with only tenuous connections. On the other hand, I also recently did a marathon rewatch (and first watch in a few cases) of the previous DC Animated Movie Universe. While it had a terrible start with Justice League: War, it's otherwise much better and more consistent overall than I remembered, and it was getting even better toward the end, so it's a shame they chose to end it in favor of a new (nominal) continuity which has mostly been inferior.