Well DICE/EA dropped a bombshell today with the announcement of three new DLC's coming out this year. The first, "Close Quarters" will be an infantry Only expansion that will have new game modes plus all the destructible environments you are used to seeing in BF3. The second, "Armored Kill" will be vehicle focused and will have the largest battlefield map ever released. The third,"End Game" which will be released at the end of year has been kept very secretive.
Here is what we know about Close Quarters: There will be four maps. Gameplay footage on youtube.com showcases "Ziba Tower", a multi-level building full of office spaces, hallways, and stairwells. There will be no vehicles. It will be a fully "HD destructible" environment and all maps will be indoor style maps like Operation Metro. There will be multiple new game modes not previously seen in BF3. It is rumored to be limited to 16 players. There is no confirmation of this from DICE. Close Quarters will be released in June.
Here's what we know about Armored Kill: There will be more vehicles introduced including ATV's, mobile artillery, and drivable tanks. It is rumored that BF2 style multi-seat bombers will also be added. It will have the largest map ever released in battlefield. It is scheduled to be released this fall.
There is still no information on when the patch will be released but with the announcement of the DLC's I am sure it will be released a couple weeks to a month ahead of Close Quarters. More info will be released on March 13th. Hopefully we'll hear about more patch updates and maybe get a glimpse at more maps. We'll keep you posted on any rumors or news that we hear about.
3/8/2012 update
Inside sources confirm that the large patch originally scheduled for February will be released prior to "Close Quaters" and will add the items support needed for the upcoming patches.

