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(Pocket-lint) - Apple's annual developer conference, WWDC, kicked off 7 June 2021 with a two-hour-long keynote and will run until the end of the week.

The biggest announcements happened on Day One, with previews of Apple's next operating systems: iOS 15, iPadOS 15, macOS 12, and watchOS 8. Surprisingly, there were no hardware announcements whatsoever.

Here is everything Apple discussed during the keynote, plus how to watch it.

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When is WWDC 2021?

Apple's Worldwide Developers Conference takes place between 7 June and 11 June 2021. Like last year's conference, it's entirely online. The main keynote happened on Day One (7 June) at 10am PDT (1pmEDT/6pm BST/7pm CEST).

How to watch WWDC 2021

Apple live-streamed its keynote. Pocket-lint embedded the video player at the top of this page. Below are some additional ways you can watch it.

Following the end of the keynote, it will also be available to watch in the Apple Podcast app. You can download and watch it in the TV app, too.

What happened at WWDC 2021?

Apple uses WWDC to get developers up to speed with its latest operating system and software updates so that they can get their apps ready.

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Read more: Apple overhauls FaceTime: Here's everything new

Kicking off its announcement of iOS 15, Apple announced a major update to FaceTime, likely in an effort to better compete with Zoom and other video calling services that exploded in popularity over the past year. As a result, it's developed new features for FaceTime, such as spatial audio, voice isolation, ‌FaceTime‌ Links, and SharePlay. FaceTime is also coming to the web, so Android and Windows PC users can finally use it.

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iOS 15

Read more: Apple iOS 15 release date, features, and rumours

Apple unveiled a wealth of new features for its iPhone operating system. The new features were designed with the intent of helping users stay connected, find focus, and explore the world, said Apple SVP Craig Federighi. Beyond FaceTime improvements, iOS 15 is gaining a new notification experience including Notification Summary, a new Focus feature, Love text, updates to Photos and Apple Wallet, and more.

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iPadOS 15

Read more: Apple iPadOS 15 release date, features, and rumours

After announcing iOS 15 at WWDC 2021, Apple also discussed its operating system update for iPads. It will add a much-requested feature to iPad when iPadOS 15 releases later this year; you will finally be able to use widgets on the home screen. As well as widgets, Apple is finally adding the App Library to iPad too. Several other new features will be coming with iPadOS 15. Better multitasking is one, for example.

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macOS 12 Monterey

Read more: Apple MacOS 12: Release date, features, and rumours

Alongside its other software updates, Apple introduced the latest version of macOS: MacOS Monterey, or version 12. Safari has been given an overhaul in the update, plus you can AirPlay to your Mac from your iPhone or iPad. A new Universal Control feature is coming, too, plus you will be able to drag a file from the iPad to a Mac or even a second Mac if they're all connected to iCloud.

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watchOS 8

    Read more: Apple watchOS 8 release date, features, and rumours

    Apple announced watchOS 8, the latest version of its smartwatch platform for the Apple Watch. The new software follows last year's watchOS 7. It includes a new Mindfulness app, an extension of the Breathe app that tells you to breathe throughout the day. The Fitness app is getting more workout types for tai chi and pilates, and the Home app is getting redesigned, among other updates.

    Is that it?

    Here's Pocket-lint's coverage of the Day One keynote:

    Writing by Maggie Tillman.