I installed the new update last night and it certainly was a time-consuming one. This update is large and touches every aspect of the OS. The Anniversary Update will report itself as version 1607, despite the fact that it technically launched in August instead of July.
One of the biggest updates is to Cortana. Cortana is an intelligent personal assistant created by Microsoft for Windows 10, Windows 10 Mobile, Windows Phone 8.1. Cortana was demonstrated for the first time at the Microsoft BUILD Developer Conference (April 2–4, 2014) in San Francisco. It has been launched as a key ingredient of Microsoft’s planned “makeover” of the future operating systems for Windows Phone and Windows. Cortana mainly competes against assistants such as Apple’s Siri and Google’s Google Now. Microsoft has integrated Cortana into numerous products such as Microsoft Edge, the browser bundled with Windows 10. Microsoft’s Cortana assistant is deeply integrated into its Edge browser.