"[Apps] try to draw us in for fear of missing out", said Apple's Crag Federighi, Apple's senior vice president of software engineering.
iPhone: The star of the show will be iOS 12.
The default Photos app in iOS finally has a built-in intelligent search feature - you can now search for multiple terms, locations, and more. Let's take a look and see.
Other digital wellbeing features to launch with iOS 12 include enhancements to the "do not disturb" feature, including a bedtime mode that dims the display and hides all notifications from the lock screen until prompted in the morning.
Apple has made iOS 12 available for all devices that can now run iOS 11.
Apple is also going to start grouping notifications together so that customers aren't overwhelmed with lots of.
Good news for users of Apple's phones, tablets, notebooks and other devices: iOS 12 is coming, and it's bringing a number of welcome improvements.
Hand in hand with the new system, a new file format was introduced: Universal Scene Description (USDZ).
Shortcuts for Siri can be used to get tips from Siri, and to create custom shortcuts for individual apps.
There will be a new "For You" tab that will combine Memories and iCloud shared albums.
Apple wasn't the only company that climbed to record highs on Monday, as both Amazon and Microsoft also saw big gains.
Another example is if Siri detects you are running late for a meeting, it will suggest that you message the person who is hosting the meeting.
To go along with these benefits there's a dedicated Shortcuts app.
A newly-designed Apple Books app, for ebooks and audiobooks. It'll tell you how often you pick up your phone, which apps send you the most notifications and so on.
If you have an older version of Windows, or you use Linux, then it's a bit trickier to watch WWDC 2018. Apple News is now built into Stocks, too. You can now also set an ending time for your Do Not Disturb command in the Control Centre.
Once iOS 12 lands later this year, the iPhone and iPad will group notifications from the same app into one notification. You can now facetime with up to 32 people. You can now move from a group chat to a FaceTime video call just by clicking connect.
BREAKING: This is a live piece and we'll update it throughout the conference.
The big talking point about iOS 12 is that, much like the recently announced Android P, the software will place more importance on letting you switch off from your device.
This app was first announced in September 2014, but had appeared to have been forgotten until now.
As part of the anti-addiction initiative, there are also new parental controls that limit kids from using their devices.
Away from safety settings, ARKit is also expected to get an upgrade.