Just released the October update - 20111013. Highlights of this release:

• Lots of new maps
• New map chooser UI
• Improved modding tools
• Added naval transport in RA (!!!)
• Repair your ally’s buildings
• New controls: doubleclick to select all units of the same type; Z to cycle unit stances
• Improved AI behavior
• Many small bugfixes and balance changes

The full user-friendly changelog can be found on GitHub.