Lol I’m not an insider, but if I had to guess I would say Thursday May 9th at 11 AM PST with patch notes to follow afterward. We already have the PTR patch notes, and aside from a few changes I can’t imagine them taking too long to come out with patch notes after the campfire for the Seasonal gimmick.
We may also get a campfire before this to go over the changes being made to the PTR due to our feedback as well but don’t quote me on that. They could very well lump it together with the seasonal gimmick.
Again this purely a guess, I more then likely will be wrong.