The Monster Hunteth, and the monster taketh away. On April 30, just over three years after the game's release, the online multiplayer servers for Monster Hunter Tri on Wii will be disabled.
Capcom's hope is that the people still playing the action RPG on Wii will migrate to Monster Hunter 3 Ultimate on Wii U and/or 3DS, of course. That comes out March 19, giving you a safe, six-week overlap period to secure your hunting fix.