The International 2015's main event will run a full six days, as opposed to last year's four. Valve once again plans to feature 16 teams in championship Dota 2 play, and says it will send team invitations "shortly after" May 1.
Valve did not announce venue details, prize pool or ticket availability. The announcement of The International Dota 2 championship comes much earlier in the year than it has in previous years. Valve said it announced the tournament's date "so that you're able to start making room in your schedules."
The International 2015 will run concurrently with another major game event, the Gamescom convention in Cologne, Germany. Valve's debut The International tournament took place at Gamescom in 2011.
Last year's The International Dota 2 championship, the fourth Valve-backed tournament, took place at Seattle's Key Arena, from July 18 to 21. Chinese team Newbee won last year's Dota 2 championship, defeating ViCi Gaming in the grand finals to win a $5 million prize pool.