5/1: Updated with new details below…

Over the last few months, reports have suggested that Apple is working on a new cross-platform feature that would allow across iOS and macOS. While the feature has been speculated to be included in iOS 12, a new report says it’s not coming until 2019 and may not be as extensive as initially thought…

This evening’s report comes from John Gruber at Daring Fireball, citing “mostly second-hand” sources. The report explains that the feature “sounds like a declarative control API,” but Gruber says he doesn’t have extensive details at this point.

Essentially, this capability would mean that developers would not have to write classic procedural code, but rather could declare a feature and its attributes using another form.

The report explains that there’s nothing “inherently cross-platform” about such a feature, noting that it makes sense under certain circumstances. For instance, it would address the API differences between iOS and macOS, or perhaps create a cross-platform UI framework.

But it makes sense that if Apple believes that (a) iOS and MacOS should have declarative control APIs, and (b) they should address the problem of abstracting the API differences between UIKit (iOS) and AppKit (MacOS), that they would tackle them at the same time.

Gruber then goes on to say that he’s “nearly certain” this feature will not launch at WWDC this year, but rather is a “2019 thing for macOS 10.15 and iOS 13.” The initial report had indicated the feature would launch in 2018.

This evening’s report paints a different picture than Bloomberg’s initial report, which described Apple’s Marzipan project as one that would support cross-platform apps that ran on iPhone, iPad, and Mac.

That report said the feature could come as early as 2018, but noted of the size and scope of the project and how that could affect the timeline. With these reports, it’s important to note how the same pieces of information could be construed by different sources and how things change during the development of these features.

Whether or not we see cross-platform features of any sort at WWDC in June remains to be seen. What do you make of this evening’s report regarding this feature? Let us know down in the comments!

New details:

Subscribe to 9to5Mac on YouTube for more Apple news:

FTC: We use income earning auto affiliate links. More.

Check out 9to5Mac on YouTube for more Apple news:

You’re reading 9to5Mac — experts who break news about Apple and its surrounding ecosystem, day after day. Be sure to check out our homepage for all the latest news, and follow 9to5Mac on Twitter, Facebook, and LinkedIn to stay in the loop. Don’t know where to start? Check out our exclusive stories, reviews, how-tos, and subscribe to our YouTube channel

About the Author

Chance Miller

Chance is an editor for the entire 9to5 network and covers the latest Apple news for 9to5Mac.

Tips, questions, typos to chance@9to5mac.com