Microsoft threw its Windows Mobile faithful a bit of bone today by updating its Bing application with free turn-by-turn navigation. When using Bing to find directions, a new “navigate” button will allow users to navigate to their destination using voice prompts. The navigation is (obviously) powered by Bing Maps, while the voice components are provided by Microsoft’s Tellme technology. The feature is said to be available for all Windows Mobile 6.x devices on Sprint, T-Mobile, and AT&T. Verizon Wireless was not listed amongst the compatible carriers, but seeing how the Omina II was mentioned as a compatible device we think it might be possible to get the nav feature — but not the voice prompts — to work on Big Red. Point your Windows Phone to m.bing.com and let us know what you think.