Apple Senior Vice President of Software Engineering Craig Federighi speaks about the new OS X Yosemite during the Apple Worldwide Developers Conference at the Moscone West center on June 2, 2014 in San Francisco, California. Tim Cook kicked off the annual WWDC which is typically a showcase for upcoming updates to Apple hardware and software. The conference runs through June 6 Justin Sullivan/Getty Images

Apple’s World Wide Developers Conference (WWDC) kicks off at 10 a.m. PDT/1 p.m. EDT with a keynote address by Apple CEO Tim Cook. The tech giant will stream the event live available for Apple devices or Quicktime for Windows. IBTimes will be live blogging the event to keep you up to date with the announcements as they come.

Apple OS X 10.10 is expected to be announced at the WWDC.

The computer operating system upgrade, which goes by the internal codename “Syrah,” has been dubbed OS X “Yosemite” as its official marketing name. In 2013, Apple (NASDAQ: AAPL) retired its naming of computer operating systems after big cats and began naming systems after California landmarks, with the first being OS X Mavericks.

The OS X 10.10 operating system is expected to largely focus on updates to the user-interface design. In particular, OS X 10.10 may adopt a look and feel similar to Apple’s iOS 7 mobile operating system. OS X 10.10 may feature app icons that look like those on iOS 7 in addition to an overall “glassy” and “flat” feel, with apps and programs opening directly on top of the desktop with no shadowing. The update may also include a new design for the Mac App Store and new version of iWork and iLife.

Mashable editor Lance Ulanoff tweeted on Monday a photo of Mac computers at WWDC, which may be running demo version of the new OS X.

Here are the Macs where Apple will run the OSX demos. #WWDC pic.twitter.com/Pz7FuRhPYN

— Lance Ulanoff (@LanceUlanoff) June 2, 2014

Developers I spoke to last week said that OS X and iOS need start to mirroring each other more closely. #whatweexpect #WWDC14

- Thomas Halleck (@tommylikey) June 2, 2014