Yes I know a little about it cause I just read things relavent only several days.
If you have interest on it, I recommend to read this
<HIVE:Porting Hots DiabloIII and Starcraft 2 Models to Warcraft 3> by:
Razorclaw_X.
Btw first of all you need a client. The version i used is a beginning patch of D3 Reaper of Souls, which doesn't contain the latest content like nercomancer etc. I'm not sure if these tools and methods work on the present game file.