Zarhym announced the Warcraft III: Frozen Throne ladder will be reset this upcoming Monday to give path to the 2010 Tournament.

Blizzard Quote:
Update: We have completed our back-end testing of the scheduled ladder reset for the Warcraft III: The Frozen Throne 2010 Tournament. We will officially be resetting the ladders on Monday, April 5. Thank you all for your patience.

Original: As you are all aware, we initially intended to reset the Warcraft III ladders on Monday in preparation for the Warcraft III: The Frozen Throne 2010 Tournament; however, there has been a delay in the implementation of this ladder reset through our Battle.net platform. For this reason we do not currently have a time frame for when the ladder reset will officially occur.

The way in which ladder resets are implemented has recently changed. We’re still reviewing these changes to ensure the tournament is not negatively impacted. Unfortunately, the testing procedure is taking longer than we initially anticipated. We’ll provide more information as soon as we are able.

Warcraft III: The Frozen Throne 2010 Tournament: Warcraft III 2010 Tournament Preview https://forums.battle.net/thread.html?topicId=23767613997&sid=3000