Blizzard announced it a few days ago.
QuoteWe're pleased to announce the launch of Ladder Season Two. The top solo and 2v2 players on all Battle.net gateways will be invited to participate in a season-ending tournament based on their ladder standings as of May 2, 2005 at 12 p.m. PST. In this tournament, invitees will attempt to dethrone Season One reigning Battle.net champions PhoeNix_ReMinD, Rival.Showtime, and RendeyQ. Players will have the chance to compete for their share of a purse of cash and prizes worth over $25,000, and claim their places as the new Gateway and Overall Battle.net champions! Season Two is being generously sponsored by top hardware and software companies: Microsoft, Alienware®, Creative Labs, Razer, D-Link, and Ideazon. Read more on the Season Two webpage.
The season two webpage is at http://www.battle.net/war3/tournaments/index.shtml