Yes... there *IS* a sequel to 30 DAYS OF NIGHT...
It is called DARK DAYS and in now out in TPB form...
There is also a one-shot (I believe) called RETURN TO BARROW...
If you go to
www.steveniles.com I'm sure you could get all of the details in nuthin' flat... ;)
I hope this helps! :D
Best wishes,
Aaron Weisbrod