On other side, Nokia has just published a Bluetooth Share app to the marketplace for Windows Phone 7.8. It enables normal Bluetooth sharing, i.e. exchanging files and data between Bluetooth capable devices, on Windows Phone 7.8 platform.
But this app has some shortcomings. Firstly, it is only compatible with Windows Phone 7.8 and not for Windows Phone 7.5 which means those who have not got the update can not get Bluetooth file sharing on their dear Windows Phone devices whatever it may say. Even if you have the update, it might not work on non-Nokia made Windows Phone devices such as HTC and Samsung.
But for the impatient ones out there, there is a way out when it comes to getting the update. You can just go to a local Nokia Care Center and ask for the update. I got Windows Phone 7.8 on a Nokia Lumia 800 by this way and reportedly Nokia Lumia 610 and Nokia Lumia 710 are eligible too.
Bluetooth Share for Windows Phone