The future of Nuketown is, alas, still Nuketown. Activision's released a montage of killshots on Black Ops 2 map Nuketown 2025, which looks a lot shinier for the remaster but no less claustrophobic and chaotic. I'm not sure why they bothered putting together a montage, really - people die often enough in the average Nuketown game that you can do without the edits.
The new Nuketown is a downloadable pre-order incentive, and also supports Zombies Mode play. I'm giving you a rough maximum life expectancy of 30 seconds. There's the trailer.