Templar Assassin is the latest hero to be added in this morning's patch update for Dota 2, and she has immediately transitioned into the Captain's Mode pool of heroes in the test client along with Disruptor and Undying.
With the changes due to be ported over into the main client soon, User Interface updates this week include a new unpause countdown visual as well as hiding all match details until you choose to reveal the winner (for match pages).
Check out interesting tidbits on CyborgMatt's analysis of the patch updates. Meanwhile, the full changelog is available at the following link. 
Links
Development Dota 2 - Changelog
Cyborgmatt - Patch Analysis
