Release record
Release notes
Editorial synthesis with inline references and a source ledger when citations are available.
tvOS 9.1 was released on December 8, 2015 for fourth-generation Apple TV. Apple's surviving first-party record is technical rather than consumer-facing, documenting networking and UIKit behavior together with broad application-integrity, content-processing, kernel, transport, credential, graphics, and web security repairs.[1][2][3]
Apple's current consumer Apple TV update history begins at tvOS 11, and no retained version-labeled consumer narrative for 9.1 was found. This page therefore does not assert remembered user-facing additions such as media-service or remote-app changes without a surviving first-party version source.[3][4]
Source ledger
Sources are linked to the claims they support. Publication and access dates are shown when available.
Apple Developer Documentation Archive · Apple · 2015-12-08T00:00:00.000Z · Introduction; Networking; UIKit
Apple Support · Apple · 2023-11-06T00:00:00.000Z · tvOS 9.1 — 8 Dec 2015
Apple Support · Apple · 2023-11-03T00:00:00.000Z · tvOS 9.1 security content
Apple Developer Documentation Archive · Apple · 2015-12-08T00:00:00.000Z · tvOS SDK Release Notes for tvOS 9.1
Documented & observed
Source-linked features, fixes, known issues, removals, and community-observed behavior recorded across this version’s appearances and verified builds.
Release changes
Features, fixes, removals, and regressions first observed in this release record.
developerApi · introduced
Apps gained a system path for adapting literal IPv4 destinations when operating on IPv6-only networks that provide NAT64.
Recorded at Public
security · fixed
The security changes reduced remote code-execution or crash risk and strengthened protection against unauthorized credential access.
Recorded at Public
security · fixed
The version-specific advisory records memory-handling and validation fixes across IOAcceleratorFamily, IOHIDFamily, IOKit SCSI, and kernel message or memory paths.
Recorded at Public
security · fixed
Malformed content attack surfaces received input-validation, initialization, bounds-checking, and memory-handling improvements.
Recorded at Public
behavior · changed
The networking stack began using ECN by default to help reduce network delay and packet loss on compatible paths.
Recorded at Public
security · fixed
Apple's advisory documents improved memory handling for malformed web or graphics content that could otherwise enable code execution.
Recorded at Public
security · fixed
Apple's advisory documents stronger validation of executable segments, access-control structures, and trusted code-loading state.
Recorded at Public
developerApi · changed
UIKit aligned focus-driven scrolling with tracking-mode behavior, changing the execution context observed by app code during the animation.
Recorded at Public
Milestones
Every recorded channel appearance in chronological order. Open an appearance for any available build, scope, notes, and sources.
Developer beta
Developer beta
Developer beta
Public release
tvOS 9.1 reached the public channel on December 8, 2015 with documented networking and UIKit behavior changes plus extensive security repairs for fourth-generation Apple TV.
Historical context
Pace, intervals, and duration compared with earlier releases on the same platform.
Historical avg for .1 releases
44 days, 5.5 milestones
Based on 10 previous tvOS .1 releases
Cycle vs. platform average
35d (avg: 59d)
24 days shorter than the tvOS average
Duration ranking
#43 of 50
Middle of the pack tvOS beta cycles
Longest gap in this cycle
20 days
Between Beta 3 and Public
| Version | Year | Cycle | Milestones | Avg. Interval |
|---|---|---|---|---|
| tvOS 18.1 | 2024 | 41d | 6 | 8d |
| tvOS 16.1 | 2022 | 40d | 7 | 7d |
| tvOS 15.1 | 2021 | 34d | 6 | 7d |
| tvOS 13.3.1 | 2020 | 42d | 4 | 14d |
| tvOS 12.1.1 | 2018 | 35d | 5 | 9d |
| tvOS 12.1 | 2018 | 42d | 6 | 8d |
Scroll horizontally to compare every historical field.