Operation Raccoon City has received a patch. Many fixes are for the multiplayer components and improvemnts to AI.

Capcom Unity's Brelston has posted a summary of some of the changes:

-Improved matching. Easier to connect and added each user's NAT info to main menu for easier troubleshooting.

-Matchmaking from invites improved.

-Ally AI improved

-Enemy AI and responses improved

-Adjusted various elements of weaponry, including ammo count, knockdown distance, weapon respawn times etc

-Improved aiming/fire accuracy

-Items can be picked up while dashing

-Infinite CQC combo addressed (can't string together endless attacks)

-Players can take cover immediately following a dive

-Also a fair number of bugs addressed

Source