Public release
Public
Source-linked recordSources linked
- Availability
- available
- Sources
- 2 linked
Release record
tvOS 11.2.1
Source-linked record
Public release
- Recorded milestones
- 1
- Beta cycle
- —
- Average interval
- —
- Public release
- Dec 13, 2017
Chronology evidence
Version sources
These sources support version-level chronology or metadata. A researched version overview has not been added.
- About the security content of tvOS 11.2.1
Apple Support · 2026-08-17 · About the security content of tvOS 11.2.1
- Apple security releases
Apple Support · Apple · 2026-07-27T00:00:00.000Z · tvOS 11.2.1; released December 13, 2017
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 .2.1 releases
44 days, 5.5 milestones
Based on 2 previous tvOS .2.1 releases
Previous .2.1 releases (tvOS)
| Version | Year | Cycle | Milestones | Avg. Interval |
|---|---|---|---|---|
| tvOS 10.2.1 | 2017 | 48d | 6 | 10d |
| tvOS 9.2.1 | 2016 | 40d | 5 | 10d |
Scroll horizontally to compare every historical field.