I didn't even think they'd have one this year but I guess they have a lot to announce. It's been a year since Heart of the Swarm, I'm skeptical they have enough of Legacy of the Void to show off. Which leaves WoD content, Hearthstone goodies and Heroes of the Storm.
They aren't going to show Titan, recall it was scrapped nearly a year ago and rebooted from scratch. So that's years and years away.
They have one unannounced game, so that may be the focal point for fresh reveals.
Good luck getting tickets.Tickets will go on sale for $199 on Wednesday, May 7 at 7 p.m. PT and again on Saturday, May 10 at 10 a.m. PT. Additionally, tickets for a pre-BlizzCon dinner benefiting Children's Hospital of Orange County, Calif. will go on sale May 14 at 7 p.m. PDT. They are $750 each and include BlizzCon admission.