The Swamp Thing info was true. It was cut to 10 episodes, and word it was cancelled leaked after the first episode aired. Should be note word it was cancelled leaked, that was not announced by DCU who no doubt planned to hold off on announcing it. I am betting that the decision to cancel shows happens all the time after one week, just usually doesn’t get out that soon. Yeah it still looked bad, but don’t think that is the first time the decision to axe something happened so soon.
That let to a rumor that Warner was re-evaluating DCU… which by the way can mean anything and even the most reliable sources said DCU was being re-evaluated. That could mean dozens of things but everyone took that as proof it was going down even though no one said “Warenr is deciding whether or not to end it”. Warner Brothers then released an HBO MAX (their new streaming service) trailer that showed among other things Doom Patrol… which got people more convinced it was going to roll into HBO MAX. However… it was speculation that has sense proven to be mostly if not completely false.
As for the rest though, most was covered but to repeat DCU at the same ComicCon people pointed out DC’s lack of presence, DC had a presence by the way, Warner Brothers just didn’t and there was nothign in the main Hall H… not a great look but DC not showing up like some claim wasn’t true at all. DC showed up and had pannels including a DCU one. Where it was reported that Doom Patrol and YJ were coming back as said above. They also mentioned Harley Quinn and Stargirl which along with everything else seems to imply that they have programming lined up for into when HBO MAX launches. They did say that some (maybe all) the new programming would also stream simultaniously on HBO MAX.
Warner also has said on the record that DC Universe would remain as is.
So would not worry too much, yes we don’t know what the future holds but all signs point to DCU not going anywhere. A lot of people have for some reason been rooting for DCU to fail from the get-go. I don’t know why. But seems most jumped the gun.