KB3176493 also bumps the operating system to build 10586.545, and there are no new features introduced with this new update.

KB3176493 includes these key changes

Improved reliability by allowing more time for devices to recover from connected standby mode. Security updates to Internet Explorer 11, Microsoft Edge, Kernel Mode Drivers, Windows Authentication Methods, Microsoft Graphics Component, and Kernel Mode Blacklist. Fixed problems on certain devices that can’t switch from connected standby to sleep mode, updates not installing, and Internet Explorer 11. Fixed issue affecting certain devices with Bitlocker enabled that didn’t start up to the BitLocker password entry screen. Fixed problem that delays the display of content when resizing the IE11 browser window. Addressed problem with rendering multi-pixel points in Web Graphics Library (WebGL). Fixed issue with special keys and mouse clicks that don’t work on devices when Remote Assistance is in session. Addressed issue with MouseUp and MouseDown events not working correctly when using a scroll bar in an Inline Frame (IFrame).

Along with this new update, Microsoft has also released cumulative update KB3176495 for Windows 10 Anniversary Update. Windows 10 build 10586.545 (KB3176493) is available immediately. The new update will download and install automatically, but you can always force the update from Settings > Update & security > Windows Update and clicking the Check for updates button. Source Microsoft (link 1), (link 2) All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.