Blizzard DOTA is becoming Blizzard All-Stars as part of an agreement between Blizzard and Valve over the rights to the DOTA (Defense of the Ancients) name.
Valve gets the commercial rights to DOTA and gets to keep the title for DOTA 2, while Blizzard will continue to use "DOTA" non-commercially to describe the genre that originally spawned the DOTA name: player-made maps for Warcraft 3 and StarCraft 2.
"We're pleased that we could come to an agreement with Blizzard without drawing things out in a way that would benefit no one," said Gabe Newell, president and co-founder of Valve. "We both want to focus on the things our fans care about, creating and shipping great games for our communities."
That's fine by Blizzard, which says the Blizzard All-Stars title is a better reflection of the game it's making. The company says the reasons will be come clear "at a later date."