and if so, what year was it made in or when did they stop making it?
the d-bag definitely had a zip top a few years ago. i'm not completely sure when they made the change, but i believe it was in 2005.
I have the new 2006 D-Bag and it doesn't have a zip top- just an inside zipper pocket. I like the fact that it doesn't have a zipped top because I have easy access for papers, etc.