Here are the patch notes. Goggle Play has a check box in Settings now to add downloaded music to the watch but nothing seemed to happen so I unchecked it. I was able to pair the watch directly to my wireless headphones.
https://forums.motorola.com/posts/50a82d847b
Edit: The one thing that concerns me is this:
> Moto 360 will synchronize the time with your phone more often to make sure it is up to the minute.
I hope that doesn't mean battery life will suffer if it's polling the phone more frequently.
The "hide without dismissing" thing for cards is awesome.
The added music controls are cool. Skip forward, back and volume up and down.
VERY disappointed that there is not a "heart monitor off" option. Hopefully still to come.
The "enhanced dim" function to my eyes had no effect. I don't want it to dim, I want it to turn off without me having to do the work around every night before I go to bed.