iOS 27 beta calendar: where the cycle stands
Latest builds, the expected release date, and what your next update will be depending on which build you are running today. Verified September 9, 2026, updated by hand each time a beta ships.
Your numbers
The cycle so far
- June 2026
WWDC, developer beta 1 Developer betas have shipped roughly weekly since WWDC in June; public betas usually follow a day or two later. - 2026-08-31
Developer beta 8 Latest developer build. - 2026-08-31
Public beta 6 Same build as developer beta 8. - 2026-09-09
Apple's September iPhone event Release candidate usually lands the same day or the day after. - 2026-09-14 (expected)
iOS 27 public release Last year iOS 26 shipped six days after the event.
Result
Expected public release
-
| Version | Event | Release | Gap |
|---|---|---|---|
| iOS 26 | Sep 9, 2025 | Sep 15, 2025 | 6 days |
| iOS 18 | Sep 9, 2024 | Sep 16, 2024 | 7 days |
| iOS 17 | Sep 12, 2023 | Sep 18, 2023 | 6 days |
| iOS 16 | Sep 7, 2022 | Sep 12, 2022 | 5 days |
Part of Phone Kit, a free appSave your details once and all 12 tools fill themselves in. Installs to your phone, works offline, nothing leaves your device.Open How the September cycle goes
Apple ships weekly developer betas from June through August, then goes quiet for a few days before the iPhone event. The release candidate (RC) appears on event day or the day after, and the public release follows five to seven days later, usually the Monday before the new iPhones reach customers. The table above is the last four years of that pattern.
Which build should you be on?
Daily phone: stay on the public release until the .1 update, or at minimum until the RC. The RC is the same build that ships to everyone, so it is the first beta that is really safe. Spare device: developer beta all summer is fine, and it is how I test the apps.
Getting off the beta
Settings, General, Software Update, Beta Updates, Off. You stay on your current build until the next public release, then update normally. You cannot downgrade without wiping the phone, which is the one thing to know before installing any beta on a phone you rely on. The Beta Readiness Check walks through the rest.
Dates marked expected are estimates from Apple's pattern in previous years, not announcements. Apple does not pre-announce beta or release dates.