Of all the new features, the one some of us are pretty excited about is turn-by-turn navigation in Bing. It was something that many of us got used to on Windows Mobile, so it's been a struggle in 2010-11 to have it go missing (especially with an EVO available for driving).
While the system is hardly ground-breaking, it looks well implementd here and should greatly help when driving around a new part of town. Check after the break for a video of the Mango emulator in action.
Source: YouTube (SharpGIS) Thanks, Sébastien M, for the snapshot above