Public release
Public
Source-linked recordSources linked
- Availability
- available
- Sources
- 1 linked
Release record
iOS 15.1.1
Source-linked record
Public release
- Recorded milestones
- 1
- Beta cycle
- —
- Average interval
- —
- Public release
- Nov 17, 2021
Chronology evidence
Version sources
These sources support version-level chronology or metadata. A researched version overview has not been added.
- Apple security releases
Apple Support · Apple · 2026-07-27T00:00:00.000Z · iOS 15.1.1; released November 17, 2021
Milestones
Release history
Every recorded channel appearance in chronological order. Open an appearance for any available build, scope, notes, and sources.
Historical context
Cycle comparison
Pace, intervals, and duration compared with earlier releases on the same platform.
Historical avg for .1.1 releases
20 days, 3.0 milestones
Based on 2 previous iOS .1.1 releases
Previous .1.1 releases (iOS)
| Version | Year | Cycle | Milestones | Avg. Interval |
|---|---|---|---|---|
| iOS 12.1.1 | 2018 | 35d | 4 | 12d |
| iOS 6.1.1 | 2013 | 5d | 2 | 5d |
Scroll horizontally to compare every historical field.