Apple Announces OS X Yosemite Redesigned interface,Updated notification Center, new tool and many more.

Apple announced that its iOS 8 beta at Worldwide Developer Conference. Yosemite comes with many cool features.
Completely new interfaces
Recent years OS X has changed in many ways  but the principles that defines it haven’t: power, simplicity, beauty. So apple created OS X Yosemite and made it more powerful and easier to use, while maintaining the elements essential efficiency to Mac.
By adding translucency to certain interface elements in OS X Yosemite, apple  put a greater emphasis on content. Translucent toolbars let you know there’s more to see than what’s visible in the window as user scroll. 

Answer calls from Mac

Now you can make and receive iPhone calls right on your Mac. When your iPhone rings, you’ll get a notification on your Mac showing you the caller’s name, number, and profile picture. Click the notification to answer, and your Mac becomes a speakerphone. You can also decline the call or respond with a quick iMessage. Making a phone call from Mac is just as easy.

A brand-new programming language and developer tools

To inspires the coming generation apple is introducing something new, entirely new a programming language Swift. It's  not only powerful but expressive and intuitive to use. Apple claiming that for app developers, it means a new level of creative freedom and improved performance.

Last but not least Yosemite is coming with very fresh new design and the slogan is

"Do everyday things in extraordinary ways" You can also join beta program to shape and
help make the next release of OS X  best yet. Install the latest pre-release software, try it out, and submit your feedback to apple. 

Sing Up for Beta Program

Note: Picture and Descriptions are taken from Apple