Zombies now capable of smashing down doors, but only on hard

Zombies are getting increasingly more difficult to defeat. Starting with the new path-finding API integrated into them, and now the ability for Zombies to break down doors has been confirmed. Most likely appearing in the next snapshot, Jens Burgensten confirmed this addition earlier today on Twitter. However, the Zombies will only do it if the difficulty is set on Hard or Hardcore. Lastly, no one is sure wither or not they will break down wood, iron, or both types of doors.

UPDATE: Jens has confirmed to Powered by Redstone that Zombies will only be capable of breaking wooden doors.

Source: @jeb_