Apple does not announce iOS release dates in advance, but you can track when updates typically arrive and check your device for what's available right now

Apple releases major iOS updates once a year, usually in September, and smaller security updates throughout the year on Tuesdays. The company does not publish a schedule ahead of time. You find out a new version exists when Apple releases it — not before. If you want to know whether an update is waiting for your device right now, go to Settings > General > Software Update and your phone will tell you if one is available.

The reason Apple keeps release dates private is partly operational — they want to control the moment of launch — and partly security-related. Announcing a date in advance gives people who find vulnerabilities a known window to exploit them before the patch arrives. By releasing without warning, Apple reduces the time between when a vulnerability becomes public and when most users have the fix installed.

Key Takeaways

  • Major iOS versions release once yearly, usually in September, but Apple does not announce the exact date beforehand.
  • Security updates arrive throughout the year on Tuesdays, often without advance notice, to patch vulnerabilities quickly.
  • You can check for updates manually in Settings > General > Software Update, or turn on automatic updates so your phone installs them overnight.
  • Delaying an update for more than a few weeks leaves your device exposed to known security flaws that attackers actively exploit.

The annual release pattern and what it means for your timeline

iOS 18 arrived in September 2024. iOS 17 arrived in September 2023. This yearly cycle is consistent enough that you can expect the next major version in September 2025, but Apple has never committed to that date publicly. The company sometimes releases the final version a few days earlier or later depending on testing results and internal priorities.

Between major releases, Apple pushes out point updates — iOS 18.1, 18.2, and so on — that add smaller features and fix security issues. These come out roughly every three to four weeks, though the timing varies. You do not need to wait for a specific date; your phone checks for updates automatically if you have that setting turned on.

Security updates arrive on Tuesdays, but not every Tuesday

Apple has a pattern of releasing security updates on Tuesdays, and security researchers have noticed this enough that it is sometimes called "Patch Tuesday" in the industry. However, Apple does not commit to every Tuesday, and it sometimes releases updates on other days if a critical vulnerability needs an when ready fix.

The Tuesday pattern exists because it gives IT departments and security teams time to test updates before the work week ends, and it spreads out the load on Apple's servers. But if a zero-day vulnerability — one that attackers are already using in the wild — is discovered, Apple will release a patch as soon as it is ready, regardless of the day.

How to check what version you have and whether an update is waiting

Open Settings on your iPhone or iPad. Tap General, then Software Update. Your device will show the version you currently have and whether a newer one is available. If an update is ready, you will see a button to install it. You can install when ready, or you can set it to install overnight by tapping Install Later and then Install Tonight.

If no update appears, your device is running the latest version available for your hardware. Older iPhones and iPads sometimes stop receiving updates after five to seven years, so if your device is very old, you may not see new versions even though newer ones exist for newer hardware.

Turning on automatic updates so you do not have to check manually

Go to Settings > General > Software Update > Automatic Updates. Turn on both read iOS Updates and Install iOS Updates. Your phone will then read updates automatically when connected to Wi-Fi and power, and install them overnight. You will not see a notification asking permission; the update straightforward happens.

Automatic updates are the safest choice for most people because they remove the decision-making step. You do not have to remember to check, and you do not have to decide whether now is a good time to restart. The downside is that you lose control over exactly when the update happens — it could restart your phone at 2 a.m. if that is when it finishes downloading. If you need predictability, you can leave automatic updates off and check manually every week or two.

Why delaying an update for weeks creates real risk

Once Apple releases a security update, the details of what it fixes become public within days. Security researchers, journalists, and attackers all learn what vulnerability was patched. Attackers then target people still running the old version, because they know exactly what flaw to exploit. If you wait three weeks to install an update, you are running a device with a known, documented vulnerability that attackers are actively using.

This is different from the risk of installing an update too early. A brand-new update might have a bug that breaks something on your device, but that is rare and usually fixed within days. A known unpatched vulnerability is a near-certain risk. The security math favors installing updates quickly — within a few days of release, not weeks later.

What to do if an update fails or your device will not restart

If an update gets stuck or your device freezes during installation, force restart it. For iPhone 8 and newer, quickly press and release the Volume Up button, then quickly press and release the Volume Down button, then press and hold the Side button until you see the Apple logo (about 10 seconds). For older iPhones, press and hold the Top (or Side) button and the Volume Down button together until the Apple logo appears.

After the restart, go back to Settings > General > Software Update and try again. If the update keeps failing, connect your device to a computer with a recent version of macOS or Windows, open Finder (Mac) or iTunes (Windows), and let the computer help complete the update. If that does not work, you may need to visit an Apple Store or contact Apple Support, because a persistent failure can indicate a hardware problem.

Frequently Asked Questions

Can I see what iOS version is coming next before it releases?

Apple announces the name and some features of the next iOS version at its annual Worldwide Developers Conference in June, usually three months before release. You learn the version number and broad features then, but not the exact release date. Developers can read a beta version to test, but the general public cannot.

What happens if I never update my iPhone?

Your device becomes increasingly vulnerable to known attacks. After a few months, attackers have detailed instructions for exploiting your phone. Apps may also stop working or behave unpredictably because developers assume you are running a recent version. Eventually, your device may become too slow or unstable to use reliably.

Do I have to restart my phone when I update?

Yes. iOS updates require a restart to take effect. The restart usually takes a few minutes. If you set updates to install overnight, the restart happens while you are asleep, so you do not notice.

Will an update delete my photos or data?

No. iOS updates preserve all your data, photos, apps, and settings. The update only changes the operating system itself. However, it is always wise to have a recent backup in case something goes wrong, which you can create in Settings > [Your Name] > iCloud > iCloud Backup.

Why does Apple not tell us the release date in advance?

Announcing a date gives attackers a known window to exploit vulnerabilities before the patch arrives. By releasing without warning, Apple shortens the time between when a flaw becomes public and when most users have the fix installed, reducing the window of exposure.