Check out this latest AI map...
6.49c AIplus Dota-Allstars Map Free Download (Revision 6)

http://dota-allstars-blog.blogspot.com/200...s-map-free.html

Basically, this AI is from 6.48b AIplus 1.52. But you can buy new item in v6.49c in this new map.
The best part is you can play Old Naix the Lifestealer, Old Nortrom and Kael the Invoker!
Just type "-fun" before playing the games to unlock the Fun Tavern located in bottom right of the map.