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<li class="sidebarTitle">PMD 7.8.0-SNAPSHOT</li>
<div class="sidebarTitleDate">Release date: 29-November-2024</div>
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» Release schedule and version policies
<a
target="_blank"
href="https://github.com/pmd/pmd/blob/main/docs/pages/pmd/about/release_policies.md"
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<h1 class="post-title-main">Release schedule and version policies</h1>
</div>
<div class="post-content" data-github-edit-url="https://github.com/pmd/pmd/blob/main/docs/pages/pmd/about/release_policies.md">
<details id="inline-toc-details">
<summary>Table of Contents</summary>
<div id="inline-toc"><!-- empty, move TOC here when screen size too small --></div>
</details>
<h2 id="release-schedule">Release schedule</h2>
<p>PMD uses a time-based release schedule.</p>
<p>We release a new minor version <strong>every month</strong>, usually on the last Friday of the month.
A patch release will only be done if necessary (e.g. blocker bugs).</p>
<h2 id="version-policy">Version policy</h2>
<p>PMD aims to follow <a href="https://semver.org/">SemVer</a>, that means, versions are numbered in the form MAJOR.MINOR.PATCH.</p>
<p>A <strong>major</strong> release can break any compatibility, and it means more effort to upgrade to the next major version (like
it was from 6.x to 7.x, see <a href="pmd_userdocs_migrating_to_pmd7.html">Migration Guide for PMD 7</a>.</p>
<p>A <strong>minor</strong> release tries to be compatible so that an effortless (aka “drop-in replacement”) upgrade is possible
with some exceptions.</p>
<p>Such releases might contain:</p>
<ul>
<li>fixed false-positive (FP) issues for rules</li>
<li>fixed false-negative (FN) issues for rules: These fixes might break your builds, as new violations might be found.</li>
<li>new rules: these new rules are not used by default <em>if</em> you use custom rulesets, so they shouldn’t affect your builds.</li>
<li>deprecations of existing functionality</li>
</ul>
<p>In summary: we only guarantee stability on how you integrate / use the tool, but builds may start failing because
we fixed FNs, or introduced a new rule (ie: for people referencing whole categories).
We stick to our current approach when moving / renaming rules of deprecating them, and referencing
the new one until the next major.</p>
<p>A <strong>patch</strong> release absolutely is a drop-in replacement. So only bugs (ie: crashes or obviously broken stuff,
like rules not being applied at all), or security issues (dependency updates, hardening, etc.) are part of
a patch release.</p>
<p>See also</p>
<ul>
<li><a href="pmd_projectdocs_decisions_adr_3.html">ADR 3 - API evolution principles</a></li>
<li><a href="pmd_devdocs_rule_deprecation_policy.html">Rule deprecation policy</a></li>
</ul>
<h2 id="git-branchestags-policy">Git branches/tags policy</h2>
<ul>
<li>Main development happens on the main branch (currently called <code class="language-plaintext highlighter-rouge">main</code>).</li>
<li>PR and enhancements are done on the main branch.</li>
<li>Releases are usually done directly from the main branch, we don’t create release branches.</li>
<li>Each release has its own tag named <code class="language-plaintext highlighter-rouge">pmd_releases/MAJOR.MINOR.PATCH</code>.</li>
<li>In case of a patch release, we either do it from the main branch (if there was no development ongoing)
or create a separate branch off the last release tag.</li>
<li>See also <a href="pmd_projectdocs_committers_releasing.html">Release process</a>.</li>
</ul>
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