this has been asked quite a few times, nope, non available.
PS: Garmin is coming up with one, that requires external GPS (or xx30 series). Sit Tight for that one...
See the listing in the Sticky threads. Trekbuddy and Mobile Gmaps both allow you to download maps (of limited size) to an SD card and use it withtout data. But you need to plan your area in advance and creating maps is a task