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

carplay next gen hero

RIP, CarPlay 2?

Sunday December 29, 2024 7:32 am PST by
Apple's website continues to state that the first vehicle models with next-generation CarPlay will "arrive in 2024." With less than three days remaining in the year, however, that timeframe is looking more and more unlikely. It would not be entirely Apple's fault if the stated 2024 target is missed, given that it is ultimately up to automakers to roll out the software in vehicles, but it is...
Apple Intelligence General Feature 2

Five Apple Intelligence Features Coming in 2025

Friday December 27, 2024 2:43 pm PST by
Even though iOS 18.1 and iOS 18.2 added multiple Apple Intelligence features like Image Playground, Genmoji, Writing Tools, and more, there are still new Apple Intelligence capabilities that we're waiting on. Apple has at least one more major Apple Intelligence update coming in 2025, and the functionality that we're expecting is outlined below. Priority Notifications Notification summaries...
New Things Your iPhone Can Do in iOS 18

22 New Things Your iPhone Can Do in iOS 18.2

Monday December 23, 2024 6:30 am PST by
Apple released iOS 18.2 in the second week of December, bringing the second round of Apple Intelligence features to iPhone 15 Pro and iPhone 16 models. This update brings several major advancements to Apple's AI integration, including completely new image generation tools and a range of Visual Intelligence-based enhancements. Apple has added a handful of new non-AI related feature controls as...
apple tv plus teaser

Apple Teases Apple TV+ Surprise on January 4 and 5

Thursday December 26, 2024 10:35 am PST by
Apple this week began teasing some kind of upcoming Apple TV+ surprise that's set to happen on January 4 and January 5, telling customers to "stay tuned" and "save the date" in social media posts. Apple's images have a tagline that says "See for yourself," but it isn't clear what Apple has planned. Some users on Reddit have speculated that Apple might be planning to launch a promotion that...
Sudoku Apple News iOS 18

iOS 18.2 Added a New Game to Your iPhone

Saturday December 28, 2024 12:03 pm PST by
Starting with iOS 18.2, released earlier this month, Apple News+ subscribers in the U.S. have access to daily sudoku puzzles in the Apple News app. There are easy, moderate, and challenging difficulty levels for the daily puzzles. A scoreboard tracks your sudoku stats, including your total number of puzzles solved, fastest completion times per difficulty level, and more. Sudoku is the...
AirTag and Lavender iPhone

AirTag 2 Launching Next Year With These New Features

Tuesday December 24, 2024 8:35 am PST by
Apple is expected to release an AirTag 2 next year, and a few new features and changes have already been rumored for the item tracker. Below, we recap what to expect from the AirTag 2: The new AirTag is expected to be equipped with Apple's second-generation Ultra Wideband chip for longer range. The chip debuted last year in the iPhone 15 and the Apple Watch Ultra 2, and Apple said it...
Generic iOS 19 Feature Mock Light

iOS 19 Rumored to Be Compatible With These iPhones

Sunday December 22, 2024 8:09 am PST by
iOS 19 will not drop support for any iPhone models, according to French website iPhoneSoft.fr. The report cites a source within Apple. The report said that iOS 19 will be compatible with any iPhone that is capable of running iOS 18, which would mean the following models: iPhone 16 iPhone 16 Plus iPhone 16 Pro iPhone 16 Pro Max iPhone 15 iPhone 15 Plus iPhone 15 Pro ...
airpods pro 2 gradient

AirPods Pro 3 Expected Next Year: Here's What We Know

Monday December 23, 2024 4:18 am PST by
Despite being released over two years ago, Apple's AirPods Pro 2 continue to dominate the wireless earbud market. However, with the AirPods Pro 3 expected to launch sometime in 2025, anyone thinking of buying Apple's premium earbuds may be wondering if the next generation is worth holding out for. Apart from their audio and noise-canceling performance, which are generally regarded as...

Top Rated Comments

critter13 Avatar
75 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
75 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
75 months ago
Finally a useful feature from Apple!
Score: 8 Votes (Like | Disagree)
PBG4 Dude Avatar
75 months ago
Awesome! Can’t wait for these features to be added.
Score: 6 Votes (Like | Disagree)
uajafd Avatar
75 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
75 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)