Update Full list post iOS 10 public release on 13/09/2016
Read receipts by conversation in iMessages
iCloud Drive Desktop folder
Air Quality Index for China
Faster Camera launch
Continuity Clipboard
Autocorrect improvements for Korean & Thai
Notes collaboration
Unlimited tabs in Safari
Male and female Siri voices for Russia, Spain & Italy
Definition dictionary in Danish
Live Photos stabilization
Markup in Messages
Side-by-side Mail compose iPad
Location suggestions in Calendar
New iPad Camera UI
Live Filters for Live Photos
Conversation view in Mail
Discover in iBooks
Improved Auto Enhance in Photos
Faster FaceTime connectivity
CarPlay app reordering
Split View in Safari on iPad
Rest & type iPad keyboard
Sort Favorites in Apple News
iCloud Drive Documents folder
Bilingual dictionaries in Dutch & Italian
Apple Pay in Safari
Mail suggested move folder
Air quality in Maps for China
Found in Messages
Brilliance adjustment slider in Photos
Mail filters
CarPlay on ultra wide screens
Bedtime alarm
Siri in South Africa & Ireland
Definition dictionary in Traditional Chinese
Live Photos editing
Avoid tolls in Maps
Mailbox column
Faster attachment sending in Messages
No Game Center app, service is still there
Delete stock Apple apps
Re-download stock Apple apps from App Store
Panes in Control Center
New animations for opening and closing apps
3D Touch in Control Center
New Back button
New Folder view
App Store gets back Categories tab
Slide to unlock is gone from Lock screen, replaced by “Press home to unlock”
Read receipts for individual Contacts in Messages
New keyboard sound
Cellular Data option in 3D Touch Quick Actions
Take photos while listening to music
Optimized storage for Music
iOS 10 kernel is left unencrypted intentionally
Widgets now show up on left side of Home screen, as well as left side on Lock screen, and even on left side of Notification Center system-wide
Low Light, Medium Light, Bright Light options for Torch/Flashlight in Control Center
New file system called ‘Apple File System’
Home screen widgets in 3D Touch Quick Actions
Get notifications on where you last parked your car
In-line video playback in Messages, Safari and other apps
ReplayKit now allows live video streaming from apps and games, as well as screen-casting
iPad as hub for HomeKit instead of Apple TV
RAW support in Camera app
Notifications for publishers in Apple News app
Continuity Keyboard (tvOS 10 required on Apple TV)
Magnifier feature under Accessibility setting
100+ new emojis
Warning when connected to open and unsecured Wi-Fi networks
Raise to Wake
Warning if Liquid is detected in Lightning port
“Hey Siri” now activates only one device at a time
“Rest Finger to Unlock” option is still there
Photos app can detect 7 facial expressionsPhotos app can detect 4432 type of objects
Prioritized app downloads
Warning for apps that aren’t 64-bit compatible
Improved landscape mode for Safari on small screen devices
Close all tabs in Safari at once by tapping and holding on the tabs button.
3D Touch to clear all notifications at once in Notification Center
Search bookmarks and Reading List in Safari
Tap and hold links in Safari to get new “Share” option, clicking on which invokes Share Sheet
Swipe up on a photo to view related photos in Photos app
Spotlight Search can now search iCloud Drive app
Markup in Photos app
Song lyrics in Music app
Siri now provides suggestions when editing the query manually
Access Spotlight Search from anywhere system-wide
System-wide Look Up feature
3D Touch on app’s icon on the Home screen to share that app
3D Touch to rename folders on Home screen
3D Touch on the app’s icon on Home screen which is being downloaded from the App Store to pause/resume or cancel the installation
3D Touch on folders on Home screen to see pending notification at a glance
3D Touch on Spotlight Search suggestions
Calendar now suggests events based on prior events
Emergency Bypass in Contacts for Do Not Disturb
Find My Apple Watch available in Find My iPhone app for watches running watchOS 3
Split View on iPad works for App Store
Health app redesign
Health app adds new Organ Donation option