I'd be more excited if I could actually attent the FanFest. Just watching streams live never really did it for me. If I can only watch it anyway I might aswell do so at my own leisure.
News travel fast and I'll be able to catch up with everything that was announced including all the theories surrounding it later. I hope they will reveal more about the two jobs, preferably about the melee job. Some pointers about where they intend to go with healers would be great but I don't expect it yet.
Other than that I'm generally patient with announcement and there is nothing I need to know right now. It never made a difference for me wether I knew it 2 months or 2 days before release.
If the forum and discords are on fire, I'll know that it was something big and very controversial