Legacy Operations DLC & Holiday Update Rolling Out
We are pleased to announce that the Battlefield 4 Legacy Operations DLC and Holiday Update will start rolling out tomorrow morning. You can expect a slew of improvements included in the Holiday Update with changes to a variety of weapons, vehicles, classes, team/objective play, and much more. 
As previously announced, the Battlefield 4 Legacy Operations DLC will be a separate download from the Holiday Update. The Legacy Operations DLC will include a new map, Dragon Valley 2015. Learn more about Legacy Operations with this overview of the new and improved Dragon Valley 2015 [battlelog.battlefield.com]. 
The Holiday Update will be automatically deployed to your platform on Tuesday, December 15th across all platforms with the following downtimes: 
• PC: Multiplayer will be offline for 1h starting 08.00 UTC / 12.00 AM PT Dec 15th. 
• PS4: Multiplayer will be offline for 1h starting 09.00 UTC / 1.00 AM PT. 
• Xbox One: Multiplayer will be offline for 1h starting 10.00 UTC / 2.00 AM PT. 
• PS3: Multiplayer will be offline for 1h starting 11.00 UTC / 03.00 AM PT. 
• Xbox 360: Multiplayer will be offline for 1h starting 12.00 UTC / 4.00 AM PT. 
The Legacy Operations DLC will be available for manual download from your respective platform game store according to the following schedule: 
• PC at 12.00 UTC / 4.00 AM PT on December 15. 
• Xbox One at 13.00 UTC / 5.00 AM PT on December 15. 
• PS4 for NA & Asia at 23.00 UTC / 3.00 PM PT on December 15. 
• PS4 for JP at 05.00 UTC on December 16/ 9.00 PM PT on December 15. 
• PS4 for EU at 14.00 UTC / 6.00 AM PT on December 15. 
Please note: Legacy Operations is not available for PS3 or Xbox 360. 
Patch notes will be posted here [battlelog.battlefield.com]once the Holiday Update is live. Be sure to check back once maintenance is complete. 
Thank you for your patience and see you on the Battlefield!
Source: http://battlelog.battlefield.com/bf4/forum/threadview/2979150494239243007/