According to a chat with EA customer support they stated the Battlefield 4 Second Assault expansion will be released some time in February 2014.
In a another conversation, a representative has also stated the same that Second Assault should be available in the month of February 2014. So if this is not fake we will soon be playing this new expansion pack.
Question:
Do you know when the Battlefield 4 Second Assault Expansion pack would be available on PC?
Answer:
It should be available in the month of February 2014.