It's been 24 hours with my new moto 360 (2015) and it's become apparent there is a significant improvement over last years model. I have 59% battery remaining after 10 hours of moderate to heavy use with ambient display permanently on. Awesome! The watch it much more responsive. I love it, it's what Android wear should be the $600+ price is hard to swallow but I am very happy with it so far.
Rmani: Guess it's the 42mm. How does the size feel? Do we get the dark metal version? I was able to find only the leather strap one.
It's the 46mm version. It took me a while to decide on that one but the larger battery really appealed. 43% remaining now after 12 hours of moderate to heavy use (Auto WiFi enabled). It does not feel big even with the strap shoulders. It feels better on than the 2014 version did. So much faster and smoother. The ambient display is always on too which is nice, it constantly turning off was something that bugged me about the older unit.
Edit: Mines silver with the cognac leather strap, picture on page 10 of this thread if you didn't see it.