Game cannot be patched as far as changes in code without waiting 1-2 weeks for ms certification due to usage of games for windows live. Game contains some serious multiplayer bugs such as population cap bug, once you reach 100% population it will never go back down even if you lose units... Further, according to
http://community.dawnofwar2.com/ the game contains some game stopping bugs as far as single player campaign and Vista crashing. They promise a hotfix within 24 hours but the multiplayer game stopping bug with population cap cannot be fixed without code changes, so at best they will do some half ass data temporary fix most likely....
Relic decided not to release the 0day patch during beta back when we still had 8 days till release, and now they are paying the price. This is my first time trying to get into a game made by Relic and so far they have not impressed me. But, its early, lets hope they make up for bad launch of highly anticipated game...