During this week's Microsoft Keynote 2016, the company behind Windows and Xbox announced that they are planning to integrate the Halo AI Cortana into Windows 10 in a much more interesting way in the future.
One of the new features is that Cortana will be inside the upcoming version of Outlook Mail, where she will tell you if you have received new mail and will be able to read the mails out-loud to you.
Developers will be able to integrate Cortana directly into their apps so that you can perform actions with voice commands and other automated functions via Master Chief's digital companion.
Cortana is also being integrated into Skype, providing assistance via a chat interface and interacting with third-party bots from other services.