Battlefield 3 is getting a server update tomorrow on all formats, bringing more balancing tweaks to the Armored Kill gunship and the option to remove the minimap in Hardcore mode.
You should see this update in effect starting 08:30 UTC October 11. DICE said it usually takes around six hours on consoles for these updates to be rolled out to all servers worldwide.
On PC you should see these updates in about 24 hours on a majority of the servers.
You can get the entirety of the patch notes through here as well as more information.