As per Wikipedia:

Defense of the Ancients (DotA) is a custom scenario for Warcraft III, based on the “Aeon of Strife” map for StarCraft. The objective of the scenario is for each team to destroy the opponents’ Ancients, heavily guarded structures at opposing corners of the map. Players use powerful units known as heroes, and are assisted by allied heroes and AI-controlled fighters called “creeps”. As in role-playing games, players level up their hero and use gold to buy equipment during the mission.

Check out the official DotA 6.60 changelog << click the link!

Here they are:

• Download DotA AllStars 6.60 Map | DotA 6.60 New Map
• DotA 6.60 Released | Download DotA AllStars Official 6.60 Map

Good luck everyone and let’s celebrate for this wonderful new patch!