Blizzard seems to be planning an announcement for PAX East, according to Ars Technica, who share details of an invitation to see something "new" at the show, which kicks off in Boston, MA on March 22nd. "We've been working on a little something, different from our other games, and we're pleased to invite you to be the first to see it," reads the invite. "It's not a sequel, expansion or that rumored next-gen MMO, but it's something we're excited for you to get your hands on." They offer their speculation that this might be Blizzard All-Stars, their MOBA first announced as Blizzard Dota before a trademark scuffle with Valve.