Apple Launches New OS X Yosemite

Apple on Monday introduced new operating systems for its Mac computers and mobile devices, including a series of changes intended to help Macs work more seamlessly with iPhones and iPads.

The new Mac system, called Yosemite named after Yosemite National Park of United States National Park , includes a new design that streamlines the toolbar for using the computer’s calendar, clock and calculator. It also includes new icons. The new mobile system, iOS 8, adds functions like a smarter keyboard and new features for emails and text messages.

The announcements were made at the company’s worldwide developer conference WWDC in San Francisco. Apple also introduced a system called Continuity, which makes it easier to juggle content across different devices. Now a user can connect a Mac and an iPad, making it possible to compose an email on a Mac, and then swipe up on the iPad screen to resume writing the same email. A phone conversation on an iPhone can be transferred to a Mac with the new OS.

The company’s iCloud online storage service gets a new feature. The company said it was adding a new feature called iCloud Drive, which allows users to store files online and access them across different devices, similar to the service offered by Dropbox.

“Apple engineers platforms, devices and services together,” Timothy D. Cook, Apple’s chief executive, said in front of thousands of software developers at Moscone Center. “We do this so we can create a seamless experience for our users that is unparalleled in the industry.

The new Mac system and iOS 8 will release as free updates in the fall.

Fans and customers anticipating new iPhones or a smart watch will have to wait — Apple did not introduce any new hardware on Monday. The company has traditionally reserved fall and winter for its biggest product announcements.