iOS 18: Possible release date, new features, supported devices and more (2024)

iOS 18 could be the most significant update for the iPhone in a long time. In fact, Bloomberg's Mark Gurman says that iOS 18 will be "one of the biggest iOS updates — if not the biggest — in the company’s history."

The reason why has everything to do with AI, which promises to take center stage in some of the features being planned for iOS 18. This includes a revamped Siri assistant. That puts Apple in the position of hoping to answer Google, which makes AI-driven features a centerpiece of the experience with its Pixel phones, and Samsung, which made Galaxy AI tools a centerpiece of its recent Galaxy S24 launch.

Can Apple make its own unique mark with the planned features in iOS 18? Here's what we know about iOS 18 and its planned features so far.

iOS 18 cheat sheet: Biggest rumors

• Release date: Preview at WWDC 2024 on June 14, followed by a beta; a full version arrives in the fall
• Supported devices: All phones that can run iOS 17 should run iOS 18
• AI features: Revamped Sir, generative AI are the highlights
• Interface redesign: Expect a more customizable home screen
• Other features: RCS messaging support, accessibility features

iOS 18: Potential release date

Though Apple doesn't release a schedule for its iOS updates, we have a pretty good idea of what to expect from the iOS 18 launch given the company's predictable track record of scheduling iPhone software updates.

We're expecting Apple to showcase iOS 18 at WWDC 2024, as the annual developer conference usually features previews of all the big software releases coming later in the year. We now have a date for that event — WWDC 2024 gets started on June 10, with a keynote kicking off the big event.

A developer beta for iOS 18 will likely get released during WWDC 2024; a public beta should follow a few weeks after that. Past iOS beta programs have run all summer-long in the past with frequent updates for bug fixes and new features. It should all culminate just before the start of fall when a full version of iOS 18 becomes available to download right as the iPhone 16 models arrive in stores. Usually, that occurs around mid-September.

iOS 18: Supported devices

There's no official word on which current iPhones will be able to run iOS 18 and which will see the end of support. For iOS 17, Apple dropped support for the iPhone 8, iPhone 8 and iPhone 8 Plus — all devices that came out in the fall of 2018. That's in line with Apple's habit of providing five years or so of software and security support for its phones.

Should Apple stick to that five year window, that would place phones released in 2019 on the chopping block for iOS 18 support. As of this fall, the iPhone XR, iPhone XS and iPhone XS Max will be hitting that five year mark, meaning they're the most likely to be cut off from future iOS updates.

However, a post on X — the website that used to be known as Twitter — listed iPhone models likely to feature iOS 18 support, and it included those 2019 phones. If true, that would mean the same phones that can run iOS 17 will be able to uprgrade to iOS 18. Before you get too excited, note that the post comes from a private account on X and that the post was deleted soon after it appeared (though the poster in question has a history of doing that, even for accurate posts).

With all that to consider, we really won't know which phones are definitely supported until Apple announces it. That usually happens amid the iOS preview during WWDC.

iOS 18: AI features

It's far too early to talk about specific features coming to the iPhone with the iOS update. But a general theme is emerging in the initial reports about Apple's iOS 18 plans, and it all centers around artificial intelligence playing a central role in the update. It's why a number of Apple sources have told reporters that iOS 18 figures to be one of the more important releases in Apple's history.

In the past year, we've seen a lot of tech companies introduce a lot of AI-powered products from OpenAI's ChatGPT to Google's Bard chatbot and its Tensor G3-powered Pixel 8 flagships. The latest company making AI news is Samsung, which made AI features the centerpiece of this year's Galaxy S24 launch. Samsung's latest phones now support photo editing tools that use generative AI, and they include features like live translations during phone calls, auto-summary features for Notes, and the ability to search for things just by circling an image on your phone screen.

For the most part, Apple has stayed on the sidelines, but that's apparently changing with in the next 12 months, particularly when it comes to the software found on its phones. Specifically, Apple is said to be investing heavily to develop conversational AI, according to a report in The Information. The idea is that iPhone users would be able to automate tasks that involve multiple steps using simple voice commands. Think of it as a smarter version of Siri, the built-in digital assistant on your phone.

Adding to that speculation, analyst Jeff Pu of Haitong International Securities, expects Apple to launch its own AI chatbot in late 2024, citing the company's plans to build AI servers to handle the expected workload. The late 2024 timing lines up with the likely release dates for the iPhone 16 and iOS 18.

The iPhone 16, in particular, could benefit from Apple's AI efforts. Leaker Revegnus took to the social network formerly known as Twitter to proclaim that Apple is going to use large language modules (LLM) for its Siri revamp. For current iPhones, that means a lot of AI features could be cloud-based; the iPhone 16, however, should have the processing power to carry out those AI features on the device itself. Subsequent reports have suggested that on-device AI is key to Apple's plans.

For what it's worth, Apple is reportedly in talks with Google about bringing the search giant's Gemini AI models to the iPhone. Presumably, this would be done in conjunction with the AI efforts surrounding iOS 18.

A lot of this will likely be powered by the A18 family of chips slated for the 2024 iPhone lineup. All iPhone 16 models are expected to run on an A18 system-on-chip of some sort, with the more powerful silicon fueling the iPhone 16 Pro models. Whatever the model, there should be enough processing power under the hood to handle any AI features Apple develops, which not only helps with speed, but also with privacy, as none of your data or queries has to leave your iPhone.

You'll notice a lack of specifics in the talk about these AI-driven features coming to iOS 18. We expect more details to emerge between now and WWDC 2024.

iOS 18: RCS support

Apple has already confirmed one feature coming to the iPhone this year, and most people seem to think it will be part of iOS 18. Last November, Apple confirmed that RCS support was coming to the iPhone via a future software update sometime in 2024.

RCS, or Rich Communication Services, is a texting protocol used by Android messaging apps. Apple has made it clear that its own iMessage platform isn't going anywhere — it remain the way that iPhone users communicate with one another. What is changing is support for texting from your iPhone to Android users. While the green bubble/blue bubble divide that currently exists will remain, it should mean improved inter-platform communication. It's assumed that features like typing indicators and read receiptswill now be supported when texting with Android devices.

Apple's pledge to support RCS is an about-face for the company, with Apple previously telling Android users who wanted less clumsy texting experiences with iOS devices to "buy an iPhone." Apple's change of heart may be inspired by the possibility of regulation in Europe, much like how EU rules drove Apple to adopt USB-C connectivity for the iPhone 15.

iOS 18: Accessibility features

Separate reports point to Apple adding new accessibility features while also enhancing some existing ones introduced in previous iOS versions.

The most extensive news on this subject comes from Mac Rumors, citing industry sources. The report claims Apple is focusing on some accessibility improvements in the coming versions of both iOS and macOS. Specific features include:

• Adaptive Voice Shortcuts, where you can create a spoken phrase that ties into an accessibility setting, effectively controlling that setting with your voice.
• LiveSpeech improvements, which will take the feature introduced in iOS 17 and add the ability to create categories for better organization.
• An extension of the Adjustable Text feature that adds support for changing text sizes in Books, News, Tips, Weather and Stocks.

Separately, Bloomberg's Mark Gurman reports that iOS 18 is adding a Hearing Aid Mode to the AirPods Pro Gen 2 earbuds. This new feature would build on the Live Listen capabilities introduced in iOS 12, that transmit audio captured by the iPhone's microphones to the earbuds.

iOS 18: Redesign

Another possible iOS 18 change has emerged, and it stems from another Mark Gurman column at Bloomberg. The Apple watcher has claimed a redesign could be in the works for Apple's iPhone software, though additional details aren't really provided. All Gurman has said is that the new look for iOS 18 won't draw on the Apple Vision Pro's visionOS software for inspiration.

What Gurman has teased is that Apple will be improving home screen customization. We hope this means you'll be able to put apps where you like within the grid, rather than having everything trying to auto-align upwards and leftwards, but it's not clear what exactly this alleged customization entails yet. We have some suggestions on possible iOS redesign changes as well as some thoughts on home-screen customization.

iOS 18 outlook

Even without a lot of the finer details at this point, iOS 18 sounds like a very significant update that will deliver plenty of new capabilities to your iPhone — even current models. We're eager for more details to emerge about the update and the next several months leading up to WWDC 2024 on June 10, particularly how Apple intends to expand the AI-driven capabilities of its phones.

More from Tom's Guide

• RCS messaging is coming to iPhones — what that means for you
• iOS 17 Journal hands-on: Apple gets personal
• Samsung Galaxy S24 — here's what Apple needs to copy for the iPhone 16