This release coincides with the Android Cupcake release for the G1 and the release of the HTC Magic. G1 users that have not received the Cupcake release will not be able to upgrade yet. But those users should be receiving the update in the next few days.
This release includes bug fixes, new features, and improvements:
- Includes bug fixes due the Android 1.5 "Cupcake" update.
- Improved GPS accuracy and sample rate.
- Faster GPS acquisition time on launch.
- Updated speech library that improves Trackmaster's speech performance.
- Stereo bluetooth support! This means that you can now hear Trackmaster's lap times and split times in a noisy vehicle or while wearing your helmet.
I tested this with a Motorola S9HD bluetooth headset:

It works great! Now I don't need to pay so much attention to the logger and I can just listen for my lap times, split times, and speed.