User blog comment:Pedro9basket/Battlefield 2143 Hinted in BF3's Wake Island/@comment-1080767-20111222063548

I think that it's an easter egg to promote the futuristic-Battlefield series. DICE designed the map. They chose that number. Its relevance to 2142 is not a coincidence. That doesn't mean that there will be a Battlefield 2142, but it does mean that DICE wants us to remember that and doesn't want us to lose faith in hoping for some kind of continuation of that universe.