How to play on a China Rising server in Battlefield 4

yes, you will only be able to play China Rising when it's out. It was like that with BF3 Premium(when you got all DLC's, but could only play them when they were released).

EDIT

As vartec mentioned in his comment:

It was the same with pre-order of BF3 when you also got Back to Karkand DLC, but you could only start playing it after it was officially released.

You will need to reinstall the game, or update the registry key to show that you have the expansion installed.

http://www.reddit.com/r/battlefield_4/comments/1tbt2p/solution_for_missing_china_rising_expansion_error/

Back up your registry

Log out and fully exit Origin

Open your Registry Editor - Type in regedit in the Search Menu and press Enter

Navigate to HKEY_LOCAL_MACHINE > SOFTWARE > Wow6432Node > EA Games > Battlefield 4

Check for a folder named Xpack1 under the Battlefield 4 folder

If it exists -> Click on Xpack1, on the right pane see if there is a string named

Installed. Double click on Installed string and set the Value data to True

If it does not exists -> Right-click on Battlefield 4 select New then select Key a new folder will be created, name it Xpack1 right-click on Xpack1 > New > String Value > name this string Installed on the right-pane, double-click on Installed, set Value Data to True

5 . Exit Registry Editor

Once all these steps have been completed, log in to Origin and start up Battlefield 4 and join China Rising Maps

I got this help from EA online assist.