Download DotA 6.78c AI v1.4e
This is the latest DotA AI map released. It dates from 5-6 months ago and some users from the official playdota.com forums are saying that it will be the last one.
Usually an update was coming within a month since the release of a new official DotA map. But that was not the case for DotA 6.79.
You can download DotA 6.78c AI v1.4e from here, fast mirror. The map has almost 7 megabytes. This version was developed by Green_Sliche.
The problem with the AI map is that most of the lately versions have been coded by different developers and is pretty hard to code a new map by using the code of other devs.