according to a press release:
The red BlackBerry Pearl also includes optional services such as Push To Talk and GPS-based wireless navigation services from TeleNav, Inc. - the subscription-based TeleNav GPS Navigator(tm), and the free - and now wirelessly downloadable - TeleNav Maps(tm).
it appears that they may be letting (some?) people with Pearls get the maps so they will want to get the sub.
but don't hold me to that....