Patch 10 brings additional AMD Crossfire support, improvements to CPU bottlenecks and a series of battle and general gameplay improvements.
Please consider un-installing all Mods (until confirmed compatible from the mod creator) before playing and you may wish to start a new campaign to see the full effect of all balance changes. It may not just be sufficient to disable mods in some cases, and you may have to completely uninstall them if you're having crash issues.
Patch 10 is Build 10270.523837.
If you experience any issues - PLEASE do not post in this thread but take them over to the Support Forums where you may be properly assisted!
Edit: Some people seem to be experiencing issues to get patch 10 if you have opted into the beta patch. We have now disabled the beta patch so you should be updated to the live patch 10 which includes the new beasts of war units. Please let us know if you continue to experience any issues!
Update (CraigTW - 17:00hrs)
Some pics of the added BoW units: