Highlights of OS X Yosemite ​

Brand new flat interface.

Flat 2D dock Photo

AirDrop with iOS

iCloud Drive

Dark Mode

SMS in iMessage

New Spotlight

Enhanced Mail

Refined Safari

Continuity

Instant Hotspot

Handoff

Phone Calls

Notification Center Widgets

--- Developer Preview 1 ---​

Released: June 2nd, 2014 ​

New iOS-inspired Boot Screen

New Finder Icon

Flatter system icons Photo

Photo New system wide font (Helvetica Neue)

New login screen background

Bing replaces Google as Spotlight Search Engine

PDF Signature Photo

Extra row in Launchpad Folders

Add pages in Launchpad Folders

24 new dictation languages

The dock 'fills up' when minimizing a window

Spotlight converts currency Photo

Photo Traffic Light buttons in Full Screen Mode

Calendar colors are much brighter

Option-click on green button gives you the old "maximize" behavior

Green button toggles fullscreen

iTunes is still the old version as of DP1

New Indicators

New Notes and Reminders App

You can plug in an iOS 8 device and record audio and video in QuickTime

Compressed Memory column in Activity Monitor

Set up Mac to sign in to your user account with your Apple ID

New Game Center UI

Low resolution pictures in Safari center themselves horizontally.

Mission Control got a fresh new look

New WiFi information

AirDrop in Finder can enable AirDrop on older Macs

New Terminal version

Mail now says "Hello from California" instead of "Hello from Cupertino, CA"

Location GPS icon when an app is using location

New login screen during a screensaver Photo

Photo System Preferences gives a notification when changing a browser Photo

Photo QuickTime flatter interface Photo

3rd party apps with sidebar get translucent feel

Encode video files by right-clicking the file and selecting the encode file option.

Full screen in Messages no longer has pillarboxing. It fills the entire screen.

Script Editor has gained Javascript syntax highlight and support. Photo

New batch renaming pane available in Finder Photo 1 Photo 2

Photo 1 Photo 2 New Safari "Exposè" tab view

Messages have new alert tones from iOS 7

iMessage Screensharing

Icons under the "Go" menu in Finder are now grey



--- Developer Preview 2 ---



Released: June 17th, 2014





--- --- New Photo Booth Interface Photo

Photo Tweaked Settings icon

Performance and Bug Fixes

Smoother animations

Hover effect in Safari Tabs

Checkbox to disable Dashboard

New Time Machine UI

Enhanced Screen Sharing

Updated Photo Booth/Screen Sharing Icons

Finder no longer needs to be open to receive AirDrops from other devices

New FileVault Panel

The dock spacing is now tighter

Spotlight tweaks

Dark Mode Available (Through Terminal Command)

The poof animation if you remove an icon from the Dock is gone

File Transfer dialogue box tweaked

in iBooks you can edit the metadata

Color Palette's look got updated Photo





--- Developer Preview 3 ---



Released: July 7th, 2014





--- --- Dark Mode Available Photo

Photo New Quicktime icon Photo

Photo Bookmark folders are now accessible via the address bar in Safari

Redesigned icons in Mail

Interface tweaks in System Preferences wallpaper chooser

Improved font in Notification Center

Larger badges on app icons

New FontBook icon

UI Tweaks in iCloud Settings

FaceTime Audio and Video now seperated Photo





--- Developer Preview 4 ---



Released: July 21st, 2014





--- --- Brand-new redesigned iTunes (Version 12) Photo (iTunes "All The Little Things")

Photo (iTunes "All The Little Things") Redesigned Calculator App Photo

Photo Settings UI for Dark Mode tweaked

Improved ability to dial out any phone number via the FaceTime app

Redesigned weather in the notification center with weather moisture

Color palette's new look from DP2 tweaked Photo

Safari does not freeze frame when using the navigation gestures





--- Public Beta 1 ---



Released: July 24th, 2014



Downloadable via redemption code in the Apple Seed Program

--- --- Mac Help updated Photo





--- Developer Preview 5 ---



Released: August 4th, 2014





Photo --- --- Bug fixes and improvements

Various Swift programming languages improvements

Volume/Brightness Controls have been tweaked Photo 1 Photo 2

Photo 1 Photo 2 Volume Feedback sound has changed

System Preferences now has integrated title bar Photo

Slightly Tweaked Calculator Widget

Modified iBooks icon

Thin, new download progress bar under Launchpad and Downloads folder in the dock

New setting in Safari to show full website addresses





--- Developer Preview 6 ---



Released: August 18th, 2014





--- --- New System Preferences Icons Photo

Photo New Menu Bar Battery status icon

3 Brand new wallpapers Photo

Do Not Disturb toggle returns on Notification Center

Dashboard now has a translucent background.

Automator now has a translucent background.

Tweaked FontBook icon

New Image Capture and Script Editor icons

New Hard Drive icons Photo

Photo New icons in Mail preferences, and Safari preferences.

Volume and Brightness control HUD designs tweaked

Spotlight's path bar design tweaked. Photo

Small tweaks to folder icons





--- Public Beta 2 ---



Released: August 21st, 2014





--- --- New iTunes Beta with UI enhancements









--- Developer Preview 7 ---



Released: September 2nd, 2014





--- --- The "Software Update" option has been removed from the main Apple menu, with App Store now displaying available software updates.

Spotlight now has a Dark Mode

New icons Dashboard, Migration Assistant, ColorSync, etc.

Modified icons in System Preferences

New look for Language & Region and Startup Disk

Software Update and Dock option removed from the Apple Menu

Apple Menu shows App Updates

New Disk Image icon

"Default for Call" option in FaceTime App

Tweaked Finder icon







--- Developer Preview 8 / Public Beta 3 ---



Released: September 15th, 2014





--- --- Back and forward buttons on System Preferences have returned. Photo

Photo The look of Help menu bar item in Dark mode is fixed

Weather widget in Notification Center now asks for your permission to access location.

New Safari Welcome screen. Photo

Tweaked Battery Menu bar icon. Photo

Application security check progress bar Photo

Tweaked WiFi icon









--- GM Candidate 1.0/ Public Beta 4 ---



Released: September 30th, 2014





--- --- Mouse/Trackpad videos updated with Yosemite UI

Redesigned volume, display brightness and keyboard backlight HUD Photo

New iWork icons previewed in Trackpad video

Bash Shellshock issue addressed

SMS Continuity Returns





--- GM Candidate 2.0/ Public Beta 5 ---



Released: October 7th, 2014





--- --- Bug fixes and enhanced performance





--- GM Candidate 3.0/Public Beta 6 ---



Released: October 9th, 2014



Released: October 13th, 2014 (As Public Beta 6)





--- --- Bug fixes







Hello! My fellow Mac users, today Apple unveiled its brand new update to the OS X family! OS X 10.10 Yosemite! And it is beyond beautiful with exciting features, this thread will go over all the little things this release shall have.Plenty of new things, so let's get to it shall we