Windows 10 Mobile Anniversary Update introduces tons of new features, here's the full changelog!

Start and Action Center

• Live tiles now update all at once on the startscreen instead of one-by-one if there are updates for their content
• Live tiles now can update badges and content at the same time
• Apps will now launch faster if there are incoming live tile
• The app icon is no longer repeated in the Action Center, instead, it is shown only in the header
• The All apps list now also follows the "Make Text Larger" option
• The header for each app is now smaller to make more room for notifications
• Notifications can now have hero images
• Notifications in both banners and Action Center now follow the "Text Scaling" setting
• You can now hold notifications to turn them off for the app or go to the notification settings
• The size of notification icons has been decreased from 64x64 to 48x48
• App names on Live tiles now follow the Ease of Access Text Scaling setting
• The default wallpaper for a new device has been changed
• When you dismiss multiple notifications at once, the background will no longer fade to black between them
• If a Quick Action turns a certain functionality in your device on or off (Bluetooth, Flashlight, etc.) it will now show On/Off for a short period

Cortana and search

• Cortana is now available in Spanish (Mexico), Portuguese (Brazil) and French (Canada)
• Cortana will now show a button on the top to search for music
• Cortana can now provide turn-by-turn directions with the new Maps app
• Cortana can now sync across devices
• You'll now get a notification whenever your mobile device is running out of battery
• Find my phone/Ring my phone is now available through Cortana
• You can now share map directions between your devices
• Cortana can now show new notifications in the Action Center
• Cortana can now automatically fetch the required speech language for you
• Cortana can now give reminder suggestions
• You can now change Cortana's language
• Cortana's Settings have been moved outside the Notebook
• You can now create reminders with photos or shared info from apps
• Improved share UI for reminders
• Cortana can now search in your Office 365 account
• You can now send a picture from your phone to your PC through Cortana
• Notifications on your phone will now be synced to your PC with Cortana
• Cortanas listening animation has been updated
• Cortana should now listen more reliably after tapping the mic button
• Cortana's home UI no longer shows your cards but hints and a button to show the cards

User Interface

• The back-button on the lock screen has been replaced with a camera button
• The lock screen now shows media controls directly on the UI
• The Bing logo on the Bing lock screen has been updated, appears smaller and no longer has the text "Bing"
• The data migration process now uses a larger font
• The "Goodbye" message will now stay visible until the device has been shut down completely

• Glance screen now follows the Ease of Access scaling settings

Microsoft Edge

• Edge has been updated from version 25.10586 to 38.14393
• You can now swipe to go back and forward
• The X-button to close tabs is now larger
• Word Flow now works in the Edge address bar
• The InPrivate browsing icon is now placed next to the "New tab" button in the tab overview
• You can now require a prompt to pop up before a download starts
• Edge now shows a "Go forward" item in the ellipses menu
• When an app opens a new tab, pressing back will now close it
• When typing in a text box, you can now use the pase button above the keyboard
• Download notificaions in Edge now include filenames, download status and site domain on separate lines
• EdgeHTML has been updated from version 13.10586 to 14.14393
• Default parameters
• Async/await
• Object.values and Object.entries
• Opus audio format
• Time element
• Date element
• Output element
• Color input type
• Canvas Path2D objects
• Web Speech API
• Improved accessibility features
• Support for Beacon
• Web Notification API
• Beacon API
• Fetch API
• The User Agent String has been updated
• The following flags have been added
• Foundational work for Web Notifications has been implemented (but not functional)
• You can now set a flag for "Compose scrollbar thumbs independently"
• You can now set a flag for DirectX settings "Use Windows.UI.Composition"
• A flag for WebRTC 1.0 is available but not functional and will be removed in a later version
• You can now set a flag to enable VP9 support
• ES6 Regex symbols
• Web Payments
• TCP Fast Open is disabled by default but can be enabled
• A flag has been added to enable Standard Fullscreen API

Settings

• New panels, settings and options
• You can now choose which app's notifications are more important to you
• You can now choose how many notifications an app can have in the Action Center
• You can now manage on a per-app base if an app can run in the background or not, or if this has to be hanled by Windows
• Windows Update now allows you to set the time you're most active in so that it can avoid updating at that point
• You can now manage the order of Quick Actions in the Action Center for all slots
• You can now change the charge threshold before Battery Saver is enabled
• It is now possible to hide Quick Actions you don't use
• The is now a toggle for the VPN Quick Action button
• You can now override Active Hours with the Restart Options
• The Windows Update notification after installing an update now takes you to the device's update history
• Navigation Bar settings now have their own page
• You can now opt to use 3G only
• Dual-SIM devices now support Visual Voicemail
• You can now manage your Insider settings from the Settings app
• You can now set how long it takes before Windows Hello requires you to sign in again
• Apps for websites has been added under System
• Sharing a network with your contacts in Wi-Fi Sense is no longer possible
• "Always show Glance screen when charging" is now the default behavior for Glance screen
• The Mobile Hotstpot page now gives clearer errors when setting up a hotspot fails due to the lack of a SIM being connected
• The refresh rate for Wi-Fi data usage is now faster
• Active hours can now be set to a range of up to 12 hours instead of 10
• As of build 14361, your DPI settings will be backed up in the cloud and restored after your device is refreshed
• Kids Corner is no longer available
• Visual updates and others
• Adjust brightness automatically is now enabled by default
• Every page in Settings now has its own icon
• Glance has been moved from Extras to Personalization
• Improved performance when opening Settings > Update & security > For developers
• The background of the category overview and sub-category overview is now black instead of dark grey
• A selected sub-category now has a Groove-like select state
• The title of pages is now displayed larger
• The icons under Update & Security have been updated to be more reflective of their meaning
• Improved performance for loading the app list under Storage settings

System

• Continuum now supports USB Ethernet
• The Bluetooth AVRCP profile has been updated to version 1.5
• Windows now has a one-handed Japanese kana keyboard
• You can now run up to 16 apps in the background
• Improved performance when retrieving updated GPS coordinates while you're driving
• Improves app launch reliability
• Improved logic for refreshing the Live tiles on the start screen
• Improved reliability for keyboards with large dictionaries
• The thumbnail logic has been altered to only create a small thumbnail after making a photo, and making the larger thumbnail when required to save storage
• During the final preparations, Windows will only go through 8 to 10 migration steps
• The Word Flow keyboard has an improved recognition of longer words
• You can now abort an autocorrection by tapping on the bolded word
• The call in-progress banner is now shown above notifications so you no longer need to dismiss that notification to end the call
• The emoji set has been completely revamped
• The default emoji’s are no longer grey, but yellow
• The text prediction engine has bene improved to show candidates based on the current keyboard language, instead of the language that was used when the word was written
• 5-inch devices like the Lumia 640 and 830 can now also use the one-handed keyboard
• Improve reliability of Bluetooth in cars
• The back-up format is changed, causing back-ups to take less from your OneDrive space, however, back-ups are incompatible with older versions of Windows 10 Mobile
• Improved battery performance for people that often turn the screen on and off again to look at the lock screen

Apps

• You can now swipe a conversation to delete it in Messaging
• The phone app now show an indicator for missed calls and voicemails
• You can now cycle through pages in the phone app infinitely
• Option to use the Camera app to take a photo and send it with Skype
• The alarm will now go louder faster when using your music
• FM Radio is no longer installed as a default app
• Improved reliability for navigating between camera roll and the Camera app
• The Insider Hub and Windows Feedback apps have been merged to Feedback Hub
• You can now react on feedback in the Feedback Hub
• The Feedback Hub now suggest a category when you've typed in your feedback
• The "Alerts" page in the Feedback Hub has been removed

And further

• Windows now identifies itself as version 1607