Windows Phone - App update!

It send it was a fix for a Bluetooth bug. My band would never stay connected to my iPhone 6 I was literally just complaining about it today and then saw there was an update and now it's staying connected.
 
Anyone been able to find out definitively what changes were included in this app/firmware update? I find "general fixes and improvements" to be pretty descriptively vague. Not complaining, hey, I'm glad to see things happening! Just curious I guess.
 
After updating, my Band now shows caller name when the call comes in. Before, it only showed the number, but oddly, would show the name in the call list after the call. I use my Band with a Lumia Icon krunning WP 8.1 update via dev preview.

I too noticed the vibration when connecting to the charge cable..
 
FYI, if you have the MS Health app installed to an SD card, you might need to cancel the update and move the app to the phone's main storage and then run the update.

I had to before it would install the update. (8.1/1520 fwiw)
 
I think they fixed the Bluetooth integration when your phone is connected to your car. Before the band voice features wouldn't function or after a while the streaming would fail when I was playing music from my phone, now both work fine simultaneously.