In today's preview build, users can also set simple reminders with Cortana, including events that don't have due dates. It's possible to return to these reminders later to set specific parameters. In future updates, Cortana "will be able to retrieve these upon request, just like a real personal assistant would," the Windows team promises.

Microsoft is also updating the Lock and logon screens -- they'll now have the same background (the one chosen for the Lock screen). The company is also working to streamline the transition between the Lock and logon screens.

The latest update squashes a few bugs, including a glitch where Cortana showed reminders for events that were already completed. Some PCs bluescreened after downloading certain drivers from Windows Update, but this build should take care of that problem. Additionally, all Windows Insiders will now receive Windows 10 firmware updates automatically as they become available.