Until recently, some of the most popular content streaming services such as Netflix, Hulu and Amazon would not allow movies and TV shows to be downloaded for offline viewing, much to the disappointment of their subscribers. While Netflix and Hulu haven't budged from their position, Amazon broke from the pack last September by adding Prime Video downloads to its mobile app, which allows Amazon Prime members to download content to their iPhones or iPads and watch it even when an internet connection isn't available or is too lousy for streaming video.
iOS 9.3 will be a bigger update than usual, introducing several new features such as Night Shift, enhancements to CarPlay, News and Health, several new education focused features for the iPad, and the ability to secure your Notes with a password or your fingerprint.
Apple's recently released Music Memos is basically the Voice Memos app updated and geared toward songwriters, singers and the otherwise musically inclined. According to Apple's press release, the app was inspired by Voice Memos and the fact that "musicians and songwriters around the world have used [it] on their iPhones to quickly record ideas." Music Memos gives artists tools to record, analyze and share their ideas through a simple, streamlined interface typical of Apple products.
Beta testing is always a risky business, especially if you are installing the unproven software on your main device. The whole point of beta testing is to identify bugs and instabilities in software that has not yet been officially released. As such, there is always the possibility of installing the software and finding that your device constantly crashes in certain situations, or certain features no longer work. For instance, the 9.3 beta has elicited complaints about Bluetooth not working properly.
Apple's Night Shift is a new feature in iOS 9.3 (which hasn't officially been released yet, but is currently available in the public beta) that is similar to the very popular f.lux app that is only available for jailbroken iPhones. The new setting lets the user shift the iPhone's display toward the warmer end of the spectrum.