Apple Leaks Video of macOS 10.14 Showing Xcode 10 With Dark Mode, News App, and More - MacRumors
Skip to Content

Apple Leaks Video of macOS 10.14 Showing Xcode 10 With Dark Mode, News App, and More

Steven Troughton-Smith today discovered a brief video on Apple's servers that appears to show Xcode 10 running on macOS 10.14.

xcode 10
The well-known developer says he found the 30-second clip buried within an API on the backend of the Mac App Store. He shared a direct link to the video, embedded below, with 9to5Mac's Guilherme Rambo.


Given the video originates from Apple's servers, and is for its own Xcode development tool, everything shown is very likely real.


That includes:

  • Xcode 10 has a new dark interface, while the Trash icon in the dock is also darker, suggesting that macOS 10.14 may feature a systemwide dark mode, including in apps. On macOS 10.13, there is a partial dark mode, but only for the dock and top menu bar.

  • There is an Apple News icon in the dock, suggesting that it will be expanding to the Mac with a desktop app.

  • The desktop background could be a picture of the Mojave Desert in California during the night, hinting at a macOS Mojave name for the next version. MacRumors recently noted that Mojave could be Apple's top choice based on the company's recent trademark activity.

The video itself also likely confirms rumors that the Mac App Store will be redesigned on macOS 10.14 to more closely resemble the App Store on iOS 11, including the addition of preview videos like this one for apps.

The leak comes just two days before Apple's annual Worldwide Developers Conference, where the company is expected to preview macOS 10.14 alongside iOS 12, watchOS 5, and tvOS 12. WWDC opens with a keynote on Monday at 10:00 a.m. Pacific Time at the McEnery Convention Center in San Jose, California.

MacRumors will be in attendance at the keynote, with live coverage of the event beginning shortly after 8:00 a.m. Pacific Time. Stay tuned to MacRumors.com and our @MacRumorsLive account on Twitter.

Related Forum: macOS Mojave

Popular Stories

macOS 27 on MacBook Pro

macOS 27 Will Mark the End of an Era

Saturday April 18, 2026 6:45 am PDT by
During its Platforms State of the Union segment at WWDC 2025, Apple revealed that macOS 26 Tahoe is the final major macOS version for Intel-based Macs. The upcoming macOS 27 release will be compatible with Apple silicon Macs only, meaning that you will need a Mac with an M-series chip or a MacBook Neo with an A18 Pro chip in order to install the software update. macOS 27 should be available...
macworld iphone 18 pro colors

iPhone 18 Pro's Four Rumored Colors Revealed, Including 'Dark Cherry'

Friday April 17, 2026 3:50 am PDT by
A source said to be familiar with Apple's supply chain today revealed the color options Apple is planning for the iPhone 18 Pro, iPhone 18 Pro Max, and the upcoming foldable iPhone. Image via Macworld. The information comes from Macworld, which says the signature new color for this year's Pro models will be Dark Cherry, a deep wine-like red. While other sources had previously reported on a...
Aston Martin CarPlay Ultra Screen

Apple Says CarPlay Ultra is Coming to These Vehicle Brands

Saturday April 18, 2026 5:59 am PDT by
Last year, Apple launched CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. Nearly a year later, CarPlay Ultra is still limited to Aston Martin's latest luxury vehicles, but that should change fairly soon. In May 2025, Apple said many other vehicle brands planned to offer CarPlay Ultra, including Hyundai, Kia, and Genesis. CarPlay Ultra...

Top Rated Comments

maflynn Avatar
103 months ago
I may be in the minority, but I'm not a huge fan of the dark mode. I see it all over the place, so its certainly a popular theme
Score: 60 Votes (Like | Disagree)
826317 Avatar
103 months ago
I think I just came.........to the understanding that this looks amazing.. :D
Score: 52 Votes (Like | Disagree)
FocusAndEarnIt Avatar
103 months ago
Finally a leak on macOS! Been too long. I like it.
Score: 42 Votes (Like | Disagree)
cmaier Avatar
103 months ago
I don’t understand the allure of dark mode, but if it makes everyone else shut up about dark mode I’m all for it
Score: 34 Votes (Like | Disagree)
DocMultimedia Avatar
103 months ago
An actual leak! Dark mode is certainly what the younger crowd likes. And tiny fonts.

"You darn kids, get outta my yard!"
Score: 30 Votes (Like | Disagree)
_Refurbished_ Avatar
103 months ago
My excitement for WWDC has reached my a new level.

Score: 29 Votes (Like | Disagree)