If anyone has been watching Duke4.net's forums, Frederik teased what appeared to be the source code for Duke Nukem: Time to Kill not too long ago on there. And now there's even more confirmation that something is definitely happening with the game and even Land of the Babes and Zero Hour:
It'll be interesting to see what happens! I hope at the bare minimum, the controls of the games are improved and hopefully an optional first-person view mode can be added. It would make replaying the games even more fun!