macOS 10.12.5 fixes problems with USB headphones, Windows 10 & more
In addition to updates for iOS, tvOS, and watchOS, Apple on Monday issued macOS 10.12.5, making various bug and security fixes while laying the groundwork for later Mac releases.

The code solves problems with stutting audio from USB headphones, and allows "media-free" installation of the Windows 10 Creators Update using Boot Camp, according to official release notes. The 10.12.5 update can be installed via the Mac App Store.
The Store has also been enhanced for compatibility with "future software updates," Apple said. It's not clear what changes were made or which updates Apple is referring to, though at its WWDC keynote on June 5, the company is expected to showcase the next edition of macOS alongside various software and hardware announcements.
iOS 10.3.2, watchOS 3.2.2, and tvOS 10.2.1 largely appear to be maintenance updates as well, with no major feature upgrades.

The code solves problems with stutting audio from USB headphones, and allows "media-free" installation of the Windows 10 Creators Update using Boot Camp, according to official release notes. The 10.12.5 update can be installed via the Mac App Store.
The Store has also been enhanced for compatibility with "future software updates," Apple said. It's not clear what changes were made or which updates Apple is referring to, though at its WWDC keynote on June 5, the company is expected to showcase the next edition of macOS alongside various software and hardware announcements.
iOS 10.3.2, watchOS 3.2.2, and tvOS 10.2.1 largely appear to be maintenance updates as well, with no major feature upgrades.
Comments
https://support.apple.com/kb/DL1918?viewlocale=en_US&locale=en_US
All you have to do is go to support.apple.com/downloads and then search for 10.12.5 in the search box and it will appear.
http://us.download.nvidia.com/Mac/cuda_8_0/cudadriver_8.0.83_macos.dmg
This morning I was texting my adult daughter, also an Apple aficionado, and the exact same thing happened to her! Apple clearly did not do a rigorous test of the update installer this go around.