Main features:

1. Adds EV-DO Rev.A functionality for faster download and upload
speeds when transmitting data wherever EV-DO Rev. A coverage is
available.

2. Adds advanced GPS functionality including the software for Sprint
Navigation.

3. Adds a Task Manager to the Today screen for easier access and
management of Running Programs.

4. Improves Bluetooth performance including usage with Phone As Modem
and wireless stereo headsets.

5. Corrects an issue where Windows Live Messenger content may be
erased when the device power cycles.

Full article and download details:

http://www.desicrazy.com/2008/03/24/...udes-gpsrev-a/