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Release appearance

iOS 4.2.1 GM

Full article
Golden master

Recorded context

About this appearance

GM is an editorially reviewed historical archive page with 2 structured, source-backed milestone records and an explicit account of its surviving evidence boundary.

Date
Nov 18, 2010
Availability
available
Revision
No

Release notes

What changed

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

Milestone identity

Apple moved the candidate’s displayed version to iOS 4.2.1 on November 18 and distributed it for every supported device. Four days later Apple marketed the public package as iOS 4.2, preserving the historical naming mismatch.[1][2]

Indexed evidence

This page indexes 2 bounded occurrences. Titles and summaries are original synthesis; source locators identify the specific evidence family behind each record.[3]

Evidence limits

No complete 4.2.1 GM note body survives here. Two developer-facing states from the contemporaneous report are retained, including an explicit unresolved question about a VoIP warning.[1][2]

Source ledger

References

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

  1. Apple’s iOS 4.2 Available Today for iPad, iPhone & iPod touch

    Apple Newsroom · Apple · 2010-11-22T00:00:00Z · GM identity and timing

    Contemporaneous milestone identity and timing.

    Back to text ↑
  2. Apple releases iOS 4.2.1 GM to developers

    Macworld · Serenity Caldwell · 2010-11-18T05:15:00-08:00 · GM identity and timing

    Contemporaneous milestone identity and timing.

    Back to text ↑
  3. Apple releases iOS 4.2.1 GM to developers

    Macworld · Serenity Caldwell · 2010-11-18T05:15:00-08:00 · Developer app-resubmission guidance

    Contemporaneous observation; publisher prose is not reused.

    Back to text ↑
  4. Apple releases iOS 4.2.1 GM to developers

    Macworld · Serenity Caldwell · 2010-11-18T05:15:00-08:00 · Line2 ringer warning and attribution gap

    Contemporaneous observation; publisher prose is not reused.

Release changes

Changed in this release

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

compatibility · changed

Apps did not require resubmission

partiallyDocumentedreported

Developers were reportedly told that the candidate’s version increment did not require another App Store submission.

  1. [1] Apple releases iOS 4.2.1 GM to developers · Developer app-resubmission guidance

Release changes

Cumulative context

Broader context included for understanding, not claimed as new in this release.

knownIssue · knownIssue

A VoIP ringer issue had uncertain status

undocumentedreported

A warning described continued ringing after pickup in one background-calling app, but the evidence does not show whether this GM repaired it.

  1. [1] Apple releases iOS 4.2.1 GM to developers · Line2 ringer warning and attribution gap