The screenshot above shows a football field with tanks positioned for the game. The map is Lost City. The picture was provided by a reliable source.
We can expect WG to release the fun mode even this summer. Though, there is no information about the date, the most appropriate time would be somewhere near during the Euro-2016 Championship (June 10 - July 10).
The source sais that the developers took into account mistakes of the previous football event and will improve the mode substantially. It is on dev's test at the moment. A new field, tanks, and overtime feature - the stuff that we can expect.