Apple has today seeded the fifth beta of iOS 9.3 to developers. This comes one week after the last release. In this version we see 3D Touch used in more of Apple’s apps, Night Shift mode, which will change the display to a more yellow color during the night, and the ability to connect more than one Apple Watch to a single iPhone. With this beta the ability to use the Apple Pencil as a normal stylus is back. Also, Night Shift no longer has a popup in the Control Center. It will just turn the feature on or off.
To get this update developers can go to Settings > General > Software update > iOS 9.3 Beta 5.