The latest version of Apple's dedicated mobile operating system, iOS 9.3, has been made available for download as of yesterday (March 21st).
Although it is ostensibly only a minor release, it does include some of the most significant new features that have ever been seen on an incremental update.
Foremost among these is the much-touted Night Shift mode, which controls the blue light levels emitted from the screen. This is similar to the f.lux feature found on iMacs and will undoubtedly be welcomed by anyone who uses their device in the evening or before going to bed.
It tints the screen in progressively warmer, softer hues, making the screen gradually more tinted as the sun sets. The location of the device is used to make sure it fits with the local sunset exactly. All this is in aid of counteracting that common problem of sleep disruption caused by staring at bright blue light just before bed.
Although the feature is completely optional, nothing more needs to be done by the user to make sure it runs smoothly when it is switched on.
Some tweaks have been made to how Apple News is curated, making the app more tailored to the user's tastes. The For You section is more personalised, with new suggestions displayed as trending topics and Editor's Picks.
Apple Notes now has password protection – acknowledgement that many iPhone owners use this function for making personal reminders that they may prefer to give an added layer of protection. Individual notes can be secured with a password or fingerprint ID.