Update: Apple's mid-cycle iOS 9.3 update has been further tweaked with iOS 9.3.3. Here's all the changes to the iPhone and iPad software before iOS 10 launches in a few days.
iOS 9.3 launched in March as the biggest incremental iPhone and iPad update in several years, as Apple has new software features that go as far as changing your sleeping habits.
That's right, it has the long-sought-after iPhone Night Shift feature, which controls the blue light levels emitted from your screen, and it's finally out of beta so that everyone can download it today.
Plenty of other useful features are here, too: multi-user support for students, Apple Notes locked behind a password (or Touch ID) and tweaked News, Health and Apple CarPlay apps. In the US, Verizon gains Wi-Fi calling - finally.
All of this is coming to devices that currently run iOS 9 as well as a new phone and tablet, iPad Pro 9.7 and iPhone SE, which launched on March 31 in the 13 countries including the US, UK and Australia.
I've read dozens of news stories that tell me I shouldn't go to bed staring at my iPhone 6S Plus, my iPad Air 2 or my new MacBook, but do I follow those wise instructions? No.
Night Shift is the iOS 9.3 solution I've been waiting for, because it won't require me to change my nighttime reading and working habits. It automatically tints my screen to warmer colors.
"Many studies have shown that exposure to bright blue light in the evening can affect your circadian rhythms and make it harder to fall asleep," according to Apple.
What's neat is that iOS 9.3 uses the clock and geolocation to determine the sunset, and the screen becomes progressively more orange-tinted throughout the night, exactly like f.lux on Macs and Reader's Edition on Amazon Kindle HD 8.
The completely optional Night Shift mode is found in Settings > Display and Brightness > Blue Light Reduction, with a slider bar to control how orange or blue it looks, and to adjust the schedule.
Apple's swipe-up-from-the-bottom Control Center overlay menu adds Night Shift to the bottom row of quick settings. It's right in the middle, flanked by flashlight and timer on the left and calculator and camera on the right. That's how important this feature is for the new update.
It's all designed to allow your eyes to relax so that falling asleep is easier, and when it's time to wake up, the screen color shifts back to normal. It's the best feature found within iOS 9.3.
iOS 9.3.3 update
There's no sign of an iOS 9.4 update yet, and there may never be a system update to the nearest tenth decimal place. That's because iOS 10 beta is likely to launch at Apple's WWDC 2016 on June 13.
Instead, what we have is iOS 9.3.3 beta for some devices, since the iPad Pro 9.7 update was pulled when iOS 9.3.2 launched and hasn't made its way beyond iOS 9.3.1 just yet.
It's a familiar story: iOS 9.3.1 brought in a new fix for a bug that was making Safari crashed for some users. When iOS 9.3 first launched, certain apps installed could crashed Safari when you tried to use links within the web browser. There were enough cases of this that Apple quickly remedied the problem.
iOS 9.3.3, still in beta form, is supposed to involve more background tweaks instead of front-facing features. iOS 9.3.2 did have one notable change in that Night Shift and Low-Power Mode worked at the same time. Originally, with iOS 9.3, one disables the other.
Multi-user user support... kind of
Buried in the iOS 9.3 release notes is the first sign of multi-user support, only it's strictly for classroom iPads right now. It's one of Tim Cook's favorite Apple products.
Apple calls this new app suite 'iOS in Education', and the highlight is the fact that it enables students to log into any iPad in any classroom and pick up where they left off.
This makes a lot of sense for a school's shared iPad experience, and it comes with Photo IDs to denote profiles and simple passwords for younger students.
iOS in Education also includes three other apps meant for teachers and school officials: a new Classroom app for teach-guided lessons that ensures the students follow along, and Apple School Manager and Managed Apple IDs for consolidated admin portals.
Even if you're not going to school, the simple fact that Apple has built one form of a multi-user login experience should give you high hope for a similar iOS 10 experience in a few months.
Apple Notes password protected
Before the new iOS 9.3 arrived, keeping confidential information in Apple Notes could be a little risky. Anyone could nab your unlocked iPhone and scan the secrets you jotted down.
Thankfully, the power of Touch ID and passcodes are now a part of Apple Notes. Far too many people (read: parents) keep all of their financial data, medical information and passwords in this not-so-secret app.
iOS 9.3 allows your vulnerable folks to protect certain notes under lock and fingerprint for extra security. It also lets you sort everything by date created, date modified and alphabetically now.
iOS 9.3 update: Apple News, Health and CarPlay
Apple News curation tweaks
Apple News is a little more personal and a little easier to navigate in iOS 9.3, though it doesn't address its biggest design problems. That may have to wait until iOS 10.
Instead, the pre-loaded Flipboard clone now has a more personalized "For You" section based on your interests, and new suggestions with trending topics and Editor's Picks.
It's more streamlined now because stories with a video can be played straight from the feed, and the iPhone now supports a landscape view for everyone. The entire app loads faster, too.
None of this helps the fact that Apple News is an extremely siloed app. I really dig Samsung's easier-to-access Flipboard integration, which occupies the leftmost homescreen of its devices, like the Samsung Galaxy S6, Galaxy Note 5 and Galaxy Tab S2. But this is a start.
New Apple Health dashboard
Apple Health is becoming a little less lifeless with the iOS 9.3 update thanks to new, worthwhile third-party app suggestions and Apple Watch integration. It's about time.
Tracking down which third-party apps deliver the metrics you want is going to be easier because Health makes suggestions in its existing categories, like Weight, Workouts or Sleep.
The next time you go to Health to track your weight, you're going to see "Apps for Tracking Weight" at the bottom with at least five alternate apps you may want to try instead. Sadly, there's still no Fitbit integration on the horizon.
The dashboard is about to change if you own an Apple Watch. Apple sensibly added its Activity metrics of move, exercise and stand to the Health app's opening menu. Don't be alarmed. The separate Activity still exists if you prefer that interface.
CarPlay Music and Maps enhancements
Apple CarPlay is slowly driving alongside the shoulder of the highway, trying to pick up speed by rolling out in 2016 and forthcoming 2017 cars and trucks.
The iOS 9.3 CarPlay update is going to give it a minor boost starting with Apple Music tweaks. New (expert-picked) and For You (preference-based) songs are now part of the music menu.
The Nearby feature found in Apple Maps on the iPhone and Apple Watch is also coming to CarPlay cars, helping you find points of interests when you need them the most.
Minor iOS 9.3 changes
That's everything Apple tells you about iOS 9.3 upfront, but the software update has a few more goodies buried within its app-filled menus.
We've discovered new 3D Touch shortcuts for preloaded apps: Weather, App Store, Stocks, Health, Compass and Settings are all a tiny bit easier to navigate in iOS 9.3.
Need to tell Siri something in Hebrew, Finnish or Malay? Apple's personal assistant now understands those languages, bringing the total up to 37 languages.
In the US, Verizon customers can take advantage of Wi-Fi calling, as beta 3 finally adds this long-promised feature. Sure, Verizon's signal is often strong, but even it falters inside tall skyscrapers.
Finally, although iOS 9 release notes don't address the newly discovered 1970 glitch that bricks your iPhone and iPad if the date is set to January 1, 1970, expect there to be a vague reference to that in the final version of the text.
With iOS 9.3 out now for public consumption, everyone can download it and fall asleep while reading your iPhone or iPad in bed.