The Galaxy Editor is not out yet however it is still possible to start working on maps. I will show you different projects that have already been started by the Mapster community.
Heroes: Abilities and Attributes by 麦德三世
A chinese guy called 麦德三世 has been actively working on Heroes. He managed to give them abilities and attributes (Str, Agi, Psi ...) based on the level of the hero. He made a modification that adds a Ghost hero for Terran and Temple Knights hero for Protoss. Here are few screenshots he posted.
saltygrapes and Alevice managed to understand how he did it and explained how to get heroes with abilities and attributes on the forums. Now, the only unknown left is how to give an inventory and items to the heroes.
M3 Importer Plugin by NiNtoxicated01
NiNtoxicated01 and witchsong are working hard on the m3 models and already have some results. A M3 Importer Plugin for 3DSMax is in early stage and already able to import animated models. You can learn more (and hopefully help) about the M3 models in the Documentation for static m3 structure and the forum post for details about m3 animations.
Tetris in Starcraft II by chuky500
Not really related to Map making but chuky500 played a Tetris game using Supply Depots. This is really impressive!
I wonder what other awesome discoveries the Chinese community has achieved. Any herald that could help us on that? :)
麦德三世 is one of the greatest WarCraft III Modding Tech. Researchers in China, AKA Renee. Actually, she is a girl.
Her name is "麦德三世" ....
Oh ... My bad I'm sorry. This is fixed thanks
"离线" means offline. Her name is "麦德三世".
I have to say 离线 means offline, so the ID should be 麦德三世