Here are the confirmed release dates/months for the upcoming DLC's.
04-06-2012 – Battlefield Premium
Battlefield™ Premium will land you a number of content drops with unique in-game items not available anywhere else. First out is the one-of-a-kind Premium knife and black dog tag, plus a set of soldier camos, weapon camos, dog tags and Assignments that will make sure you stand out and get more personalization options.
12-06-2012 – Close Quarters
Close Quarters is DICE’s second Battlefield 3 expansion pack which will focus on tight, infantry-based combat and will include new 4 new maps as well as 10 new weapons and assignments. It will also feature the brand new game mode, Conquest Domination. You can check out the latest gameplay trailer “Donya Fortress” here. While most of this was known earlier, what has not yet been revealed is it’s release date. According to this fact sheet, we can expect Close Quarters to drop June 12th, 2012, meaning PS3 owners will get a head start on June 5th, 2012.
XX-08-2012 – Bonus Content
Not much is known about this “bonus content,” other than it will be available some time in August, 2012. It’s official description reads, ”enhance your Battlefield™ experience with this bonus content drop.”