• Flaming Warthog and Honor Guard Wraith skins now available in multiplayer to players who have those skulls.
• The option to show Unit Hit Point bars above units is now available.

• The number of points to reach all ranks has been reduced. General now requires 2.4 million, down from 3.2 million, and other ranks have been reduced accordingly.
• The max number of points you can get in a single match has been capped.
• The Prophet of RegretÂ’s land speed is now reduced to match other leaders.
• Vampire Tech Upgrades now increase damage done by 15% in addition to their other effects.
• Anders Cryo Bomb Upgrades now cost 50% more supplies.
• Anders Hawk Upgrade now costs 50% more supplies.

• Multiplayer Matchmaking and Connection improvements have been put in. Players should find that their 2v2 and 3v3 teams no longer split up.
• 'Ready for the Sequel' Achievement should now be rewarded properly.
• Units on Exile and Crevice should find it easier to traverse the map.

• Strategic Options DLS brings more wars to Halo Wars
• Halo Wars Title Update coming soon; bugfixes, fan requests included
• Golden halo: Halo Wars sells 1 mill
  

Via Halo Wars Forums