Ember.js Lifecycle Intelligence

Ember.js End of Life & Support Options —
What To Do When Ember Patches Stop, Every Version's Date

By Scott Bissett Updated September 5, 2026 · endoflife.ai · 8 min read

Ember.js moves on a steady release train, designating Long-Term Support (LTS) releases on a regular cadence — which means older versions reach end of life just as steadily. Ember 7.2 is the current release, shipped September 8, 2026 (7.1 reached end of life on 2026-09-08, the day 7.2 shipped), with the 6.12 and 6.8 LTS lines still supported — 6.8 to December 8, 2026 and 6.12 to May 25, 2027. Everything through 6.4 LTS, which ended June 22, 2026, is end of life.

This page is the reference for Ember.js end-of-life: every tracked version's EOL date and EOL Risk Score™, how the LTS cadence works, the Octane shift that stranded so many older apps, and the ember-cli-update path to a supported release.

In this article
  1. Ember version EOL schedule
  2. Every Ember version, one line each
  3. How Ember's LTS cadence works
  4. The Octane shift — why 3.x apps got stuck
  5. Ember 6.x LTS and 7.2 — the supported line
  6. Upgrading with ember-cli-update
Quick answer: Ember.js 7.2 is supported, with no end-of-life or end-of-support date announced yet. The next Ember.js version to reach end of life is 6.8, on December 8, 2026. 41 of 44 tracked Ember.js versions are past end of life; the most recent to reach it, 7.1, did so on September 8, 2026. Every Ember.js version's release and end-of-support date is on the Ember.js lifecycle page.

Key Dates at a Glance

Ember Version EOL Schedule

Everything through Ember 6.4 is now end of life; the supported set today is 6.8 LTS, 6.12 LTS, and 7.2. The table lists every LTS from 3.28 on plus the 7.x releases; the one-line list below it covers every tracked version. Scores below are live EOL Risk Scores™ — click any for the full breakdown.

Version Released Bug fixes end End of Life Status EOL Risk Score™
Ember 7.2 (latest) Sep 8, 2026 — Current release Supported 10
Ember 7.1 Jul 26, 2026 Sep 8, 2026 Sep 8, 2026 EOL 35
Ember 7.0 May 29, 2026 Jul 26, 2026 Jul 26, 2026 EOL 35
Ember 6.12 (LTS) May 1, 2026 Dec 8, 2026 May 25, 2027 Approaching 10
Ember 6.8 (LTS) Oct 25, 2025 Jun 23, 2026 Dec 8, 2026 Approaching 25
Ember 6.4 (LTS) Apr 28, 2025 Jan 5, 2026 Jun 22, 2026 EOL 40
Ember 5.12 (LTS) Sep 30, 2024 Apr 28, 2025 Oct 13, 2025 EOL 40
Ember 5.8 (LTS) Apr 15, 2024 Dec 30, 2024 Jun 16, 2025 EOL 45
Ember 5.4 (LTS) Oct 30, 2023 Jul 8, 2024 Dec 23, 2024 EOL 45
Ember 4.12 (LTS) Apr 3, 2023 Dec 10, 2023 May 26, 2024 EOL 50
Ember 4.8 (LTS) Oct 17, 2022 Jul 6, 2023 Dec 21, 2023 EOL 50
Ember 4.4 (LTS) May 3, 2022 Feb 8, 2023 Jul 26, 2023 EOL 50
Ember 3.28 (LTS) Aug 10, 2021 Jul 18, 2022 Jan 2, 2023 EOL 50
Ember 6.4 LTS reached EOL on June 22, 2026. If you were sitting on 6.4 as your stable LTS, that window has closed — move to 6.12 LTS (supported to May 2027) or Ember 7.2. And if you're still on a 5.x LTS or, very commonly, the old 3.28 LTS, you are well past end of life with no further fixes coming.
Running Ember.js past end of life?
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Every Ember version, one line each

The same schedule as plain statements, one per tracked release, for anyone who needs a single date rather than a table. Every date is bound to the same data as the Ember.js product page, checked against the project's LTS releases page, and re-verified at each build. An LTS receives bug fixes for 36 weeks and security fixes for 54 weeks from the day it is promoted; a regular release is superseded by the next one about six weeks later.

How Ember's LTS Cadence Works

Ember releases on a roughly six-week train, and periodically blesses a release as LTS (Long-Term Support). The LTS releases are the ones most teams target, because they get a longer, fixed support window than the regular six-week releases. When that window ends, the LTS — and everything before it — is end of life.

The practical effect: a new LTS arrives roughly every couple of quarters, and an older one drops off at a similar rhythm. Like Angular, Ember rewards a standing upgrade habit and punishes the "set it and forget it" approach: stay on the current or immediately-previous LTS and upgrades are small; let several LTS windows pass and the gap compounds into a real project.

Target the LTS, not the bleeding edge For production Ember, the sweet spot is the most recent LTS (or the one just behind it with an upgrade scheduled). You get the longest supported window without chasing every six-week release. Pin to an LTS, put its EOL date in your roadmap, and move before it lands.

The Octane Shift — Why 3.x Apps Got Stuck

The reason so many Ember apps are stranded years back isn't the six-week cadence — it's Octane. Ember Octane (which became the default edition in the 3.x series) modernised Ember substantially: Glimmer components, tracked properties for reactivity, native classes, and a move away from the classic object model and computed properties. It was a genuine improvement, but it changed enough idioms that migrating a large classic-Ember app to Octane patterns is real work.

Many teams paused on a late classic 3.x release — 3.28 being the common resting point — and never made the jump. Those apps are now multiple major versions and several years past EOL (3.28 has been end of life since January 2, 2023). The longer they sit, the larger the combined Octane-plus-version-gap migration becomes.

Ember 6.8 LTS, 6.12 LTS and 7.2 — The Supported Line

Ember 6.8 / 6.12 LTS & Ember 7.2
6.8 → EOL Dec 8, 2026 · 6.12 → EOL May 25, 2027 · 7.2 current
25
EOL Risk Score™

Supported Ember today means the LTS lines and the current release. Ember 6.12 LTS (bug fixes to December 8, 2026, security fixes to May 25, 2027) is the conservative target — 6.8 LTS works too but its window closes December 8, 2026; Ember 7.2, the current release (shipped September 8, 2026, superseding 7.1 which reached end of life the same day), carries the newest features. Note that the non-LTS 6.9–6.11 and 7.0–7.1 releases are already EOL. The supported releases score in the low band; the live values are on their score pages.

Modern Ember is Octane-by-default and considerably leaner than the 3.x era apps people remember. If you're coming from a stranded classic-Ember codebase, the destination is genuinely nicer than the journey suggests — but the journey is the point: getting current is what restores security patches and ecosystem compatibility.

Upgrading with ember-cli-update

Ember provides first-party tooling for exactly this migration, and the discipline is the same as any fast-cadence framework: small, frequent steps beat one giant leap.

Stranded on classic Ember? Apps pinned to 3.28 (or earlier) sometimes need a real, scheduled project to reach a supported 6.x — the Octane jump plus the version gap is genuine work. While that's planned, extended-support options can keep an EOL Ember app patched in the interim; compare them on our partners page.

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Frequently Asked Questions

Which Ember versions are supported right now?

Ember 6.12 LTS (bug fixes until December 8, 2026, security fixes until May 25, 2027), Ember 6.8 LTS (security fixes until December 8, 2026) and the current release, 7.2. Regular (non-long-term) releases are superseded by the next release about six weeks later — for example 7.1 shipped July 26, 2026 and reached end of life on September 8, 2026, the day 7.2 shipped.

How does Ember's LTS schedule work?

Every fourth minor release becomes an LTS. Once a release is promoted to LTS it receives bug fixes for 36 weeks and security fixes for 54 weeks, per the project's LTS policy; regular releases are supported only until the next release, roughly six weeks. Ember 6.12, for example, was promoted May 12, 2026, gets bug fixes to December 8, 2026 and security fixes to May 25, 2027.

Is Ember 3.x or 4.x still supported?

No. Every 3.x and 4.x LTS has passed its security-fix window; only 6.8 LTS, 6.12 LTS and the 7.x line are supported today. Applications stuck on 3.x — usually because of the Octane transition — should plan a staged upgrade with ember-cli-update, or use third-party extended support as a bridge.

When does Ember 6.8 reach end of life?

December 8, 2026. Ember 6.8 was promoted to LTS on November 25, 2025; its bug-fix window closed June 23, 2026 and it receives security fixes only until its end-of-life date. Ember 6.12 LTS, the next line, runs to May 25, 2027.

Is Ember 6.4 still supported?

No. Ember 6.4 LTS reached end of life on June 22, 2026, Ember 5.12 LTS on October 13, 2025 and Ember 5.8 LTS on June 16, 2025. Only 6.8 LTS, 6.12 LTS and the 7.x line receive fixes today.

Is there extended support for Ember after end of life?

Not from the Ember project, whose support ends with the LTS security window. Third-party vendors sell security patches for end-of-life Ember versions, priced per year, as a bridge for applications that cannot complete an upgrade in time — most often the classic 3.x apps stranded by the Octane transition. Whether a bridge beats an upgrade depends on how long the application has left to run; the form on this page matches options.

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Once a month — critical end-of-life dates, CVE blind spots, and lifecycle changes worth knowing about.