Pocketberry have managed to grab a video of Bing integration being demoed on a Blackberry Torch.
The video shows how Bing Maps and Search are integrated on the Blackberry lock screen, and also shows that the Bing app remains more or less true to the Metro UI.
The app also has features missing from the Windows phone 7 app, including venue maps, street side mapping and also photo search. Apparently future updates due in December for Blackberry OS will even allow photosynth creation.
Presumable (and hopefully) much of this will also come to Windows Phone 7 eventually but it may be another case where Windows phone 7 competitors get Microsoft services well before its own OS does.