Apple's Mac OS X 10.9, which is expected to be unveiled at WWDC 2013 in June, will apparently bring new power-user features and core elements from iOS to the Mac.

That's according to 9To5Mac, which on Monday published a new report that claims to offer unannounced details of Apple's next Mac operating system.

In its report, 9To5Mac cites unnamed sources who claim that while we'll see enhancements to applications such as the Finder in OS X 10.9, the update, internally codenamed "Cabernet," won't bring any drastic changes to the user interface. 

Finder and Safari improvements

The Finder is expected to get tags and tabbed browsing modes, and a new version of Safari will have a redesigned back end to improve page loading, speed and efficiency, the sources said.

Full-screen apps in multi-monitor setup

9To5Mac's sources also claim that OS X 10.9 will introduce the ability to display a different Space or full-screen app on a single external monitor within a multiple monitor setup.

Last year, Apple Senior Vice President of Software Engineering Craig Federighi hinted that such multiple monitor setup improvements could be on their, in an email reply to a Mac user that read: "I understand your concern around using full-screen apps in multi-monitor configuration. I can't comment about our future product plans, but please do know that we are absolutely aware of our customers' passion on this topic!"

Siri support

9To5Mac notes that it is unclear whether full Siri support will make its way into OS X 10.9, or whether such functionality will arrive with future iMacs and MacBooks. It's been predicted that Apple could debut new MacBook Pro and MacBook Air models at WWDC this year, so it's a possibility that Siri functionality could be tied to the launch of these new models.

A source told 9To5Mac that October's executive shakeup might have caused Apple to alter its roadmap due to a software group shift, which could have changed the plans surrounding Siri integration.

SEE: Siri on the Mac: Apple recruiting developer to bring Siri to the Mac

iOS elements

We could see the introduction of an iOS-like multi-tasking system for the Mac with OS X 10.9, the sources say. App-pausing functionality that is used in iOS to pause background app processes could also be used in OS X 10.9, helping to improve MacBook battery life.

Apple's OS X 10.8 Mountain Lion brought app-based iOS features such as Messages, Notifications and Game Center to the Mac, so the company's next Mac OS is expected to introduce further similarities between the two operating systems.

When Apple hired former Adobe CTO Kevin Lynch as Vice President of Technology earlier this year, speculation suggested that this could foretell a move toward a merge between iOS and OS X.

Xcode 5.0

Apple is likely to announce Xcode 5.0 for developers at WWDC 2013 too, and 9To5Mac's report highlights that Apple may have hinted at this when it announced the event last week. "We're excited to [developers] the latest advances in software technologies and developer tools to help them create new and innovative apps," Apple's WWDC 2013 press release read.

It's pretty certain that we'll be getting our first official glimpse at Apple's next OS X at WWDC 2013, which kicks off on 10 June. SEE: Decoding Apple' WWDC 2013 logo: what does it mean?

In a press release sent out last week, Apple revealed that developers will "learn about the future of iOS and OS X."

In January, websites reported a spike in traffic from what appears to be machines running OS X 10.9, suggesting that the company is busy preparing to roll out the new operating system.

Tickets for WWDC 2013 sold out in a record-breaking 2 minutes when they went on sale on Thursday. SEE: Apple is growing; why not WWDC?

WWDC 2012 saw the launch of iOS 6, new MacBooks and OS X 10.8 Mountain Lion. You can find more about last year's event here

See also:

Apple expected to preview iOS 7 with 'killer app' at WWDC in June

Apple's Jony Ive pushing for 'flatter design' for iOS 7, report says

Apple to launch OS X 10.9 Lynx with Maps and Siri in 2013 - report