Blizzard had a few jokes for April 1st, one of them being a new neutral hero being added to Warcraft 3. But now, a new patch is being release that actually WILL have this hero. The Goblin Tinker will have all new abilities, such as cluster rockets, creating factories that build explosive goblin robots, or being able to transform into a giant robot himself.
http://www.battle.net/war3/neutral/goblintinker.shtml
I think once this patch takes effect, we should get a game together.