Windows 10 Microsoft prepares zero day patch to fix Windows 10 battery life

Microsoft is apparently working closely with Intel to fix a 10% loss in battery life found with their Windows 10 operating system compared to Windows 8.1. The zero-day patch would affect millions of computers and will likely be available on July 29th. Source: Microsoft and Intel working on Windows 10 battery issue fix and a zero day patch

Thanks @Josephur

Wow a firmware patch on day 1... what could possibly go wrong?

Might be nice if they would address the issue with Windows 10 mobile as well.
The difference in my phone's battery life between Widows 8 and 10 is seriously noticeable