Updates to Dota 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

HEROES

• Added Dragon Knight and Omniknight!
  
• Chen: Fixed Holy Persuation not removing buffs from the converted creep
  
• Chen: Fixed Hand of God working on dead heroes
  
• Huskar: Fixed not attacking his target right after Life Break.
  
• Batrider: Fixed Firefly being purgable.
  
• Batrider: Fixed Sticky Napalm working on ancients.
  
• Storm Spirit: Fixed an exploit with Ball Lightning that could cause you to kill enemy units from your fountain.
  
• Storm Spirit: Fixed Ball Lightning's stopping a little too early when almost out of mana
  
• Huskar: Fixed the first tick of Berserker's Blood requiring you to be hurt.
  
• Riki: Fixed the Backstab sound sometimes playing when it wasn't proccing.
  
• Sniper: Fixed Assassinate reveal debuff never disappearing if the target dodges it with a blink.
  
• Kunkka: Fixed X Marks The Spot teleporting you back if you buyback while the spell is still active.
  
• Jakiro: Fixed Dual Breath not being targetable on units directly.
  
• Queen of Pain: Fixed Sonic Wave not being targetable on units directly
  
• Batrider: Fixed Sticky Napalm not temporarily revealing the area.
  
• Batrider: Fixed Flaming Lasso not ending when Batrider dies.
  
• Zeus: Fixed a bug with spamming Arc Lightning quickly while there is another one still bouncing (only happens for very large amount of units).
  
• Skeleton King: Fixed loss of vision while reincarnating.
  
• Added missing Flail and Stun animations for Kunkka.
  

GAMEPLAY

• Enabled Huskar, Batrider and Jakrio for Captains Mode
  
• Massive server performance improvements.
  
• Fixed vision range on Siege units.
  
• Fixed bounty values on Siege units.
  
• Added Legacy keys for new heroes
  
• Fixed attack damage for Centaur Outrunner
  
• Fixed limited life units (like Necronomicon units) having dramatically more duration when converted by Helm of the Dominator.
  
• Fixed backdoor protection turning off when dominated units are nearby
  
• Fixed legacy keys not working properly for a few of the recent heroes
  
• Only allow one commendation/report per person.
  

UI

• Added a separate matchmaking pool for players who have repeatedly left games. Note: Any party that contains a player matchmaking in this pool will cause the entire party to matchmake in this pool.
  
• Fixed Captain's Mode pick timer getting reset during the 2 hero pick phases once a player does the first selection.
  
• Fixed Captain's Mode random (when out of time) being able to selected heroes not enabled for CM.
  
• Added two spectator hotkeys for controlling the replay speed (
• and =).
  
• Double-hitting the "select all other units" hotkey will now add your hero to your selection
  
• Game lobby leaders can now kick players out of the lobby.
  
• You will now be notified when you are kicked from a game lobby or party.
  

DOTA 2 BOTS

• Made bots a bit more wary of taking damage when defending a teammate.
  
• Bots will no longer back off as much when defending the Ancient or Barracks.
  
• Made bots (and particularly carries) want to farm a bit more mid-game.
  
• Fixed bug where bots were considering dead enemies in their Push Tower desire.
  
• Decreased the bots' desire to go back to base to retreive cheap non-TP items.
  
• Increased the bots' desire to visit the secret shop as they accumulate money.