Wizards have clearly decided that they intend to continue making maps freely available which is a relief as they could easily have made it part of the subscription to DDI. They have a map gallery up for the latest Dungeon magazine here:

http://www.wizards.com/default.asp?x=dnd/4map/20090225

If I am not mistaken they are all by our very own guild member, Mike Schley. Some lovely work in there, and a great reference for different styles we talk a lot about here.