DICE has confirmed via a Battlelog Blog that the Final Stand DLC is not the end for new content coming to Battlefield 4.
With Battlefield 4 Final Stand released, we hope and believe that you will enjoy it together with the rest of the game for a long time. However, there is one thing we want to assure you: there is more content coming for Battlefield 4.
We will share details on exactly what this new content will be, and when it will arrive, in the near future. We understand that this may lead to even more questions about our plans, but rest assured that we’ll get back to you on the future of Battlefield 4 when the time is right.
The post doesn’t confirm what the content is or even when it will be released although the blog post goes on to request feedback on classic Battlefield maps suggesting the content will be re-imagined maps from past entries in the franchise. You can tell them your preferred maps from past titles by taking their survey.