Apple has announced that OS X Yosemite will be launching later today as a free upgrade, after it was first unveiled at WWDC 2014.
Apple today announced that OS X Yosemite, the latest major release of the world’s most advanced desktop operating system, is available as a free upgrade for Mac users from the Mac App Store. Yosemite delivers a fresh, modern look and introduces Continuity features that make it easy to hand off activities between Mac and iOS devices and even make and receive iPhone calls from your Mac. Yosemite also includes a new Today view, a redesigned Spotlight and updated versions of Safari, Mail, Messages and iTunes.
“OS X Yosemite is the most advanced version of OS X we’ve ever built, with a brand new design, amazing Continuity features and powerful versions of the apps you use every day,” said Craig Federighi, Apple’s senior vice president of Software Engineering. “OS X Yosemite ushers in the future of computing, where your Apple devices all work together seamlessly and magically. It’s something only Apple can do, and it’s available today.”
OS X Yosemite has been redesigned with a fresh, modern look, while maintaining the power and familiarity users expect from a Mac. Streamlined toolbars make more room for your content, and use translucency to reveal additional app content as you scroll. Other translucent elements, such as window sidebars, take on the feel of your desktop picture and give you a sense of what’s hidden behind the active window. App icons have a clean, consistent design, and a new system font improves readability on every Mac and looks stunning on a Retina display.
Yosemite includes amazing Continuity features that make your Mac and iOS devices perfect companions. Handoff automatically passes what you’re doing from one device to another, like writing an email or surfing the web. Instant Hotspot makes using your iPhone’s hotspot as easy as connecting to a Wi-Fi network. AirDrop now works between Mac and iOS, so you can quickly and easily share content across devices. All the SMS messages that previously only appeared on your iPhone now can automatically appear in Messages on your Mac and all your iOS devices. You can even make and receive iPhone calls on your Mac.
Innovative new Features
● Today view in Notification Center, giving you quick access to informative widgets for Calendar, Weather, Stocks, Reminders, World Clock and social networks. You can also add widgets like Yahoo! Sports from the Mac App Store to customize your Today view;
● A new Spotlight, delivering rich information right to your desktop from Wikipedia, Maps, Bing, App Store, iTunes Store, iBooks Store, top websites, news and movie showtimes;
● iCloud Drive, so you can store files of any type in iCloud, organize them any way you like, and access them from your Mac, iPhone, iPad or even a Windows PC;
● A streamlined new Safari that delivers the fastest performance, as well as the longest battery life for web browsing and Netflix HD video streaming on the Mac;
●an updated version of Mail, which includes Markup for quickly filling out and signing forms and PDFs right within Mail, plus Mail Drop, which makes it easy to send large attachments up to 5GB for free;
● Enhanced Messages, so now you can add participants to your ongoing group conversations, see their locations on a map, quickly access attachments and even mute notifications;
● iTunes 12, which has a sleek new look, is fast and simple to use, and makes it easier to switch between browsing your music library and discovering new music on the iTunes Store. A new Recents view makes it easy to access the media you just purchased or recently played; and
● Family Sharing, so family members can now browse and download each other’s iTunes, iBooks or Mac App Store purchases.
Yosemite also delivers platform technologies that make it easier for developers to create amazing new Mac apps. Swift is a powerful, next-generation programming language for iOS and OS X that’s fast, modern, interactive and helps developers write safer and more reliable code. SpriteKit makes it easier for developers to incorporate realistic motion, lighting and physics in games and when integrated with SceneKit, makes it simple to create games with animated 3D scenes and effects.
OS X Yosemite will be launching later today for free It supports all Macs introduced in 2009 or later, and some models introduced in 2007 and 2008. Continuity features require iOS 8.1, which launches Monday. 
