If you have a phone based on Android 1.6, you no longer need to suffer from Droid envy in terms of turn-by-turn navigation. Google announced…

Happy Thanksgiving Travels: Google Maps Navigation now available for Android 1.6

So, T-Mobile G1 and myTouch 3G users can benefit from this right now. Verizon Droid Eris users running Android 1.5 need to wait until an update becomes available. The Google Maps update also includes the enhanced layers feature to let you overlay information from sources like Wikipedia.

The only feature missing from Google Maps for Android 1.6 (compared to the version for Android 2.0) is the lack of the “navigate to” voice command.