https://www.polygon.com/2017/11/3/16586568/blizzcon-2017-opening-ceremony-livestream-video >Blizzard Entertainment’s annual fan convention, BlizzCon, kicks off today in Anaheim, California, where the company is expected to announce new details for games like Overwatch, World of Warcraft, Heroes of the Storm and Hearthstone. >You can watch BlizzCon 2017's opening ceremonies streamed live, right here, starting at 11 a.m. PT/2 p.m. ET via YouTube and Twitch. The opening ceremony is expected to last about an hour.