Just called B&N here in SoCal, and the gentleman said:

3G only for D/L books.

The following is from my notes:

Older non-color Nook comes with
WiFi - D/L books, and access internet but only from WiFi locations
or
3G & WiFi - as above, using 3G elsewhere only for D/L books

Newer color Nook comes with
only WiFi, 3G not available


Thank you for helping me get that clear, as I now know I won't be getting 3G in a Nook.