DOTA 2 Unreleased Hero - Concepts

If you are still waiting for the a new hero to be release, here is a little spoil of the concept of the following heroes:

Legion Commander

Abaddon

Pitlord/Abyssal Underlord

Goblin Techies

*Note: Legion Commander and Abaddon  is currently developing by Valve and will be released very "soon."

Source: Valve Corporation