Software update version 1.17 also improves battery life by automatically turning off screen after 30 seconds of a call (originally included in Treo 650 update 1.15). The power savings will vary depending on usage patterns. To turn the display back on at any time, tap the screen. Do not press the red Power/End button, unless you want to end the call. The screen-off feature applies to handset mode only, not speakerphone or headset modes

The new update incorporates software updates previously released on Palm's website