# Unity Releases

> Independent release-first intelligence hub for Unity editor releases.
> Diff any two Unity editor versions, see every blocker, breaking
> change, API change, package bump, and known issue between them,
> bucketed by impact. Not affiliated with Unity Technologies - data is
> ingested from Unity's public editor release pages, package registry,
> and blog.

## What this site is for

A Unity developer (or an LLM helping one) deciding whether and when to
upgrade. Unity 6 (`6000.x`) is the primary focus; the legacy LTS
lines `2022.3`, `2021.3`, `2020.3`, and `2019.4` are also indexed
for upgrade planning, including the cross-major jump from any of those
to Unity 6. The primary surface is a lane-bucketed diff between two
versions; secondary surfaces list the underlying releases, packages,
and Unity blog posts.

Cross-major diffs (e.g. `2022.3.50f1` → `6000.0.74f1`) are allowed
because that's the upgrade decision most legacy-LTS users care about,
but the lane contents will mix release notes from two independent
product lines, so the output is noisier than a within-major diff.

## Markdown endpoint for LLMs

The most useful resource on this site for an LLM is a structured
markdown diff between two Unity editor versions:

`GET https://unityreleases.com/compare.md?from=<from-version>&to=<to-version>`

Example:

```
https://unityreleases.com/compare.md?from=6000.0.50f1&to=6000.0.74f1
```

Required query parameters:
- `from` - the source Unity editor version (e.g. `6000.0.50f1` or
  `2022.3.40f1`). Must be an indexed version on Unity 6 or one of the
  legacy LTS lines (2019.4, 2020.3, 2021.3, 2022.3).
- `to` - the target Unity editor version. Same constraints as `from`;
  same-major or cross-major diffs are both supported.

Optional query parameters:
- `stream` - restrict in-between releases to a stream. Repeatable.
  Values: `LTS`, `Update/Supported`, `beta`, `alpha`. Defaults to
  `LTS` if omitted.

Response: `text/markdown; charset=utf-8`. The body is bucketed into
lanes (Active known blockers, Breaking changes, Other known issues,
Security & install impact, Package updates, API changes, Fixes,
Improvements, Features, Other changes), with issue-tracker links and
status suffixes (`open`, `fixed in 6000.x.y`) on every issue ID. Each
per-release bullet carries the release date inline, e.g.
`- **6000.0.74f1** (2026-04-29) Fixed editor crash on launch`, so
chronology is available without a second lookup.

If you only need an upgrade summary, this endpoint is the right
starting point. If you need version metadata or a per-release view,
hit the HTML pages below - they render the same data with more
filtering UI.

## Pages (HTML)

- [Upgrade Intelligence](https://unityreleases.com/) - the home page. Pick two versions
  to diff. Same data as `/compare.md` rendered with filtering UI.
- [Editor Releases](https://unityreleases.com/releases) - every indexed Unity editor
  release. Unity 6 LTS is shown by default; the chip row reveals
  Supported / Beta / Alpha plus the 2022, 2021, 2020, and 2019 LTS
  lines.
- [Per-release notes](https://unityreleases.com/releases/6000.0.74f1) - replace the
  version segment with any indexed release; the body shows lane-bucketed
  release notes for that single release.
- [Packages](https://unityreleases.com/packages) - latest versions of tracked official
  Unity packages (Input System, Addressables, URP, HDRP, Cinemachine,
  Burst, etc.) with release histories.
- [News](https://unityreleases.com/news) - mirror of the official Unity blog. Secondary
  to release intelligence; included for completeness.
- [FAQ](https://unityreleases.com/faq) - explanations of the impact lanes, risk levels,
  data sources, refresh cadence, and filter semantics.

## Operational

- [Sitemap](https://unityreleases.com/sitemap.xml)
- [Robots](https://unityreleases.com/robots.txt)
- [Health](https://unityreleases.com/api/health) - JSON: data freshness per source

## Conventions

- Issue IDs follow Unity's tracker format (e.g. `UUM-12345`) and link
  out to `https://issuetracker.unity3d.com/issues/<id>`.
- Versions follow Unity's editor scheme: `6000.<minor>.<patch><tag>`
  where `<tag>` is `f<n>` (final/LTS), `b<n>` (beta), or `a<n>` (alpha).
- "Lane" = the impact bucket a release-note row falls into (one of the
  ten lanes listed above). "Risk" = independent severity axis (blocker,
  caution, review, info).

## Disclaimer

This site is not affiliated with, endorsed by, or sponsored by Unity
Technologies. "Unity" and the Unity logo are trademarks of Unity
Technologies. For anything authoritative - licensing, support, official
roadmaps - see [unity.com](https://unity.com).