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Release appearance

tvOS 9.1 Public

Full article
Public release

Recorded context

About this appearance

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.

Date
Dec 8, 2015
Availability
available
Revision
No

Release notes

What changed

Original editorial synthesis. Linked references appear with the claims they support and in the source ledger.

Public release

Apple's security-update index dates tvOS 9.1 to December 8, 2015 and limits availability to fourth-generation Apple TV. The archived SDK notes carry the same December 8 update date.[1][2]

Documented scope

The structured entries include only positive technical notes from the final SDK record and grouped repairs from the matching advisory. SDK known issues are not presented as shipped improvements, and unsupported consumer-feature claims are excluded.[3][4]

Source ledger

References

Sources are linked to the claims they support. Publication and access dates are shown when available.

  1. Apple security updates (2015)

    Apple Support · Apple · 2023-11-06T00:00:00.000Z · tvOS 9.1 — 8 Dec 2015

    Back to text ↑
  2. tvOS SDK Release Notes for tvOS 9.1

    Apple Developer Documentation Archive · Apple · 2015-12-08T00:00:00.000Z · Updated: 2015-12-08

    Back to text ↑
  3. tvOS SDK Release Notes for tvOS 9.1

    Apple Developer Documentation Archive · Apple · 2015-12-08T00:00:00.000Z · Notes and Known Issues — Networking and UIKit notes

    Back to text ↑
  4. About the security content of tvOS 9.1

    Apple Support · Apple · 2023-11-03T00:00:00.000Z · tvOS 9.1 security content

    Back to text ↑
  5. About the security content of tvOS 9.1

    Apple Support · Apple · 2023-11-03T00:00:00.000Z · AppleMobileFileIntegrity; dyld; MobileStorageMounter

  6. About the security content of tvOS 9.1

    Apple Support · Apple · 2023-11-03T00:00:00.000Z · Compression; CoreGraphics; CoreMedia Playback; Disk Images; ImageIO; libarchive; libc; libxml2

  7. About the security content of tvOS 9.1

    Apple Support · Apple · 2023-11-03T00:00:00.000Z · IOAcceleratorFamily; IOHIDFamily; IOKit SCSI; Kernel

  8. tvOS SDK Release Notes for tvOS 9.1

    Apple Developer Documentation Archive · Apple · 2015-12-08T00:00:00.000Z · Networking — Notes

  9. About the security content of tvOS 9.1

    Apple Support · Apple · 2023-11-03T00:00:00.000Z · OpenGL; WebKit

  10. About the security content of tvOS 9.1

    Apple Support · Apple · 2023-11-03T00:00:00.000Z · Security entries

  11. tvOS SDK Release Notes for tvOS 9.1

    Apple Developer Documentation Archive · Apple · 2015-12-08T00:00:00.000Z · tvOS SDK Release Notes for tvOS 9.1

  12. tvOS SDK Release Notes for tvOS 9.1

    Apple Developer Documentation Archive · Apple · 2015-12-08T00:00:00.000Z · UIKit — Note

Release changes

Changed in this release

Features, fixes, removals, and regressions first observed in this release record.

developerApi · introduced

NAT64 address synthesis

documentedconfirmed

Apps gained a system path for adapting literal IPv4 destinations when operating on IPv6-only networks that provide NAT64.

  1. [1] tvOS SDK Release Notes for tvOS 9.1 · Networking — Notes

security · fixed

TLS, certificate, and keychain repairs

documentedconfirmed

The security changes reduced remote code-execution or crash risk and strengthened protection against unauthorized credential access.

  1. [1] About the security content of tvOS 9.1 · Security entries

security · fixed

Kernel, input, graphics, and I/O repairs

documentedconfirmed

The version-specific advisory records memory-handling and validation fixes across IOAcceleratorFamily, IOHIDFamily, IOKit SCSI, and kernel message or memory paths.

  1. [1] About the security content of tvOS 9.1 · IOAcceleratorFamily; IOHIDFamily; IOKit SCSI; Kernel

security · fixed

Media, font, image, archive, and compression repairs

documentedconfirmed

Malformed content attack surfaces received input-validation, initialization, bounds-checking, and memory-handling improvements.

  1. [1] About the security content of tvOS 9.1 · Compression; CoreGraphics; CoreMedia Playback; Disk Images; ImageIO; libarchive; libc; libxml2

behavior · changed

Explicit Congestion Notification enabled by default

documentedconfirmed

The networking stack began using ECN by default to help reduce network delay and packet loss on compatible paths.

  1. [1] tvOS SDK Release Notes for tvOS 9.1 · Networking — Notes

security · fixed

WebKit and OpenGL repairs

documentedconfirmed

Apple's advisory documents improved memory handling for malformed web or graphics content that could otherwise enable code execution.

  1. [1] About the security content of tvOS 9.1 · OpenGL; WebKit

security · fixed

Application integrity and code-loading repairs

documentedconfirmed

Apple's advisory documents stronger validation of executable segments, access-control structures, and trusted code-loading state.

  1. [1] About the security content of tvOS 9.1 · AppleMobileFileIntegrity; dyld; MobileStorageMounter

developerApi · changed

Focus-driven scroll run-loop behavior

documentedconfirmed

UIKit aligned focus-driven scrolling with tracking-mode behavior, changing the execution context observed by app code during the animation.

  1. [1] tvOS SDK Release Notes for tvOS 9.1 · UIKit — Note