What's more, it has a ton of power optimization features to help squeeze even more life from the battery juice. (9to5google.com)
There are some improvements at the system level as well, which includes power optimization and fixing typos for certain modules. (phoneradar.com)
This allows for larger energy savings than previous approaches, where software power optimization was often applied as a secondary step, after the initial application was written.» (sciencedaily.com)