Apple has released iOS 9.3 as a beta to developers, and one of the biggest features of the updated operating system is multiple user support for iPads in education environments.
The new feature gives education institutions the ability to create roaming profiles for students that allows them to log on to any iPad in the classroom's inventory. When a student logs in to their account on an iPad, they'll have access to their own set of data and apps after a short download, although iOS will cache data for frequent users.
Unfortunately, multi-user support will not be available to the general public just yet. Apple has developed the feature specifically for the education market, so presumably it will be enabled only on iPads sold to places like schools. It will, however, make iPads more attractive to schools that otherwise might have opted for a Chromebook or Windows machine with true multi-user capabilities.
Hopefully we'll get multi-user support on iPads for everyone in the future, but it doesn't look like it'll be coming with iOS 9.3.
A new 'Classroom' app will also launch with iOS 9.3, giving teachers the tools to present content to students, and also to see what they're doing and lock them out of apps they're not supposed to be using. On a higher level, Apple's School Manager service will make it easier for IT managers to deploy and manage iPads in a classroom environment.
Of the non-education features found in iOS 9.3, Night Shift is the biggest. Like the third-party app f.lux that has existed for a long time on desktops (and through jailbreaks on iOS), Night Shift will change the white balance of your smartphone's display from cool to warm depending on the time of day and your location. Supposedly this will make it easier for you to get to sleep.
Other improvements include the ability to set a secondary password lock for Notes, better News app personalization, more data in the Health app, and better CarPlay music integration.