macOS 10.15 Said to Feature 'Luna Display-Like' Desktop Extension Functionality

macOS 10.15 will have a new feature that allows users to send any window of any app to an external display, according to 9to5Mac's Guilherme Rambo. The external display can supposedly be a monitor connected to the Mac or even an iPad.

luna display macbook

Luna Display

The report claims this functionality will be accessible via a new menu that can be opened by hovering over the green "maximize" button in a Mac app window for a split second. The menu is expected to provide options for making windows full-screen, tiling windows, and moving windows to external displays.

The feature, codenamed "Sidecar," is said to be similar to the Luna Display hardware solution that turns an ‌iPad‌ into a second display for the Mac.


Users with an ‌iPad‌ that supports Apple Pencil will be able to draw with the Pencil when the ‌iPad‌ is being used as an external display for the Mac, effectively "turning the ‌iPad‌ into a Wacom-like tablet," according to the report.

The report claims Apple is also working on options that will allow windows to be easily snapped to one side of the screen.

Related Forum: macOS Catalina

Popular Stories

iOS 18

iOS 18.4 Coming Next Week With These New Features for Your iPhone

Friday February 14, 2025 6:18 am PST by
The first iOS 18.4 beta for iPhones should be just around the corner, and the update is expected to include many new features and changes. Bloomberg's Mark Gurman expects the iOS 18.4 beta to be released by next week. Below, we outline what to expect from iOS 18.4 so far. Apple Intelligence for Siri Siri is expected to get several enhancements powered by Apple Intelligence on iOS...
iPhone 17 Roundup Feature 2

iPhone Design to Change 'Significantly' This Year

Monday February 17, 2025 7:09 am PST by
Apple is set to "significantly change" the iPhone's design language later this year, according to a Weibo leaker. In a new post, the user known "Digital Chat Station" said that the iPhone's design is "starting to change significantly" this year. The "iPhone 17 Air" reportedly features a "horizontal, bar-shaped" design on the rear, likely referring to an elongated camera bump. On the other...
apple launch feb 2025 alt

What to Expect From the 'Apple Launch' Next Week

Thursday February 13, 2025 11:48 am PST by
Apple has yet to announce any new devices this year, but that could change starting next week. Apple CEO Tim Cook today said to "get ready" for a "launch" on Wednesday, February 19. "Get ready to meet the newest member of the family," said Cook, in a social media post. The post includes an #AppleLaunch hashtag, along with a short video featuring an animated Apple logo inside of a circle....
Apple Maps 2024

Apple Maps Might Start Showing Ads

Sunday February 16, 2025 7:22 am PST by
Apple is "exploring" the idea of showing search ads in the Apple Maps app, according to Bloomberg's Mark Gurman. Back in 2022, Gurman said software engineering was "already underway" to display ads in the Apple Maps app, but Apple did not move forward with the idea at the time. Today, he said Apple is "giving this notion more thought" again. This time around, he said Apple has yet to...
Tim Cook Apple Park

10+ Announcements Apple Could Have Rolled Into a February Event

Saturday February 15, 2025 8:00 am PST by
Apple appears to have enough upcoming product announcements to justify a full event this month, yet all signs indicate these reveals will be handled through a series of press releases instead. There are a multitude of rumors from reliable sources about specific announcements in the coming weeks, so here's everything that Apple could have feasibly included in a hypothetical February event: ...
iPhone 17 Pro Render Front Page Tech

iPhone 17 Pro With All-New Camera Bar Design Allegedly Revealed

Thursday February 13, 2025 5:49 pm PST by
Apple's next-generation iPhone 17 Pro will feature three rear cameras arranged in a familiar triangular layout, but the cameras will be housed in an all-new rectangular camera bar with rounded corners, according to YouTube channel Front Page Tech. iPhone 17 Pro camera design render created by Asher for Front Page Tech In a video uploaded today, Front Page Tech host Jon Prosser said the camera ...
m2 pro mac mini

Apple is Now Selling a Refurbished Mac Mini for Just $319 (!)

Saturday February 15, 2025 9:58 am PST by
A few days ago, we reported that Apple's refurbished Mac mini pricing had a problem, and it appears that Apple has taken note. Apple was offering a refurbished Mac mini with the M2 chip, 16GB of RAM, and 256GB of storage for $559, which was $50 more than a refurbished Mac mini with the M4 chip, 16GB of RAM, and 256GB of storage. All other key specifications were equal. That's no longer...
maxresdefault

The MacRumors Show: Apple Teases Its Next Major Product Launch

Friday February 14, 2025 9:38 am PST by
On this week's episode of The MacRumors Show, we discuss the imminent Apple product "launch" that is widely expected to be the fourth-generation iPhone SE. Subscribe to The MacRumors Show YouTube channel for more videos In a social media post on Thursday, Apple CEO Tim Cook teased an upcoming "launch" of some kind scheduled for Wednesday, February 19. "Get ready to meet the newest member of...

Top Rated Comments

critter13 Avatar
76 months ago
as long as this doesn't require brand new iPads it could help breathe some life into older ones. great codename btw, "sidecar", nailed it.
Score: 18 Votes (Like | Disagree)
cmaier Avatar
76 months ago
There are also indications (stroughton smith) that you’ll be able to combine with handoff-like functionality. In other words, when working with an app on the mac, send it to your iPad, and it can actually launch the ipad version of the app and populate it with the app state so you can keep working on your ipad without being anywhere near the mac. With marzipan, many ipad apps will be identical code to their mac versions, which will make this much easier for developers to support.
Score: 9 Votes (Like | Disagree)
EvilEvil Avatar
76 months ago
Finally a useful feature from Apple!
Score: 8 Votes (Like | Disagree)
PBG4 Dude Avatar
76 months ago
Awesome! Can’t wait for these features to be added.
Score: 6 Votes (Like | Disagree)
uajafd Avatar
76 months ago
I just can see Luna Display yanked from the App Store for "duplicating the core functionality" in 3... 2... 1...
Score: 6 Votes (Like | Disagree)
PickUrPoison Avatar
76 months ago
As much as I love BTT, if those features are built in to macOS, it’ll go the path of F.Lux.
Maybe BetterSnapTool will, but BTT also has all the TouchBar and mouse/trackpad/keyboard customizations so I think it’ll still be around.
Score: 6 Votes (Like | Disagree)