> ## Documentation Index
> Fetch the complete documentation index at: https://private-7c7dfe99-fix-nav-issues.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Release status page

> Page with release status for each release channel

export const ReleaseSchedule = ({releases = []}) => {
  const StatusIndicator = ({status}) => {
    const color = status === "green" ? "#22c55e" : status === "orange" ? "#f59e0b" : "#ef4444";
    return <span style={{
      display: "inline-block",
      width: 8,
      height: 8,
      borderRadius: "50%",
      background: color,
      marginRight: 6
    }} />;
  };
  const DateCell = ({date, note, status}) => <span>
      <StatusIndicator status={status} />
      {date}
      {note && <Tooltip tip={note}><Icon icon="circle-info" size={12} /></Tooltip>}
    </span>;
  return <table>
      <thead>
        <tr>
          <th rowSpan={2}>Version</th>
          <th colSpan={2}>
            <a href="/docs/manage/updates#fast-release-channel-early-upgrades">Fast Channel</a>
          </th>
          <th colSpan={2}>
            <a href="/docs/manage/updates#regular-release-channel">Regular Channel</a>
          </th>
          <th colSpan={2}>
            <a href="/docs/manage/updates#slow-release-channel-deferred-upgrades">Slow Channel</a>
          </th>
        </tr>
        <tr>
          <th>Rollout Start</th>
          <th>Rollout End</th>
          <th>Rollout Start</th>
          <th>Rollout End</th>
          <th>Rollout Start</th>
          <th>Rollout End</th>
        </tr>
      </thead>
      <tbody>
        {releases.map((release, idx) => <tr key={idx}>
            <td>
              {release.changelog_link ? <a href={release.changelog_link} target="_blank" rel="noopener noreferrer">
                  {release.version}
                </a> : release.version}
            </td>
            <td><DateCell date={release.fast_start_date} note={release.fast_delay_note} status={release.fast_progress} /></td>
            <td><DateCell date={release.fast_end_date} status={release.fast_progress} /></td>
            <td><DateCell date={release.regular_start_date} note={release.regular_delay_note} status={release.regular_progress} /></td>
            <td><DateCell date={release.regular_end_date} status={release.regular_progress} /></td>
            <td><DateCell date={release.slow_start_date} note={release.slow_delay_note} status={release.slow_progress} /></td>
            <td><DateCell date={release.slow_end_date} status={release.slow_progress} /></td>
          </tr>)}
      </tbody>
    </table>;
};

ClickHouse Cloud offers different release channels to cater to different user needs regarding stability, access to new features, and upgrade predictability. Each channel has a distinct upgrade schedule and is meant to address the different usecases - for users that want instant access to new releases and those that want to defer upgrades to ensure they receive the most stable version of the release.

<h2 id="release-channel-details">
  Release channel details
</h2>

<Accordion title="Learn more about release channels">
  | Channel Name             | Description                                                                                                                                                                                                                     | Key Considerations                                                                                                                   | Tiers Supported                              |
  | :----------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | :----------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------- |
  | **Fast (Early Release)** | Recommended for non production environments. This is the first release channel for every database version upgrade                                                                                                               | New feature access over stability.<br />Ability to test releases in non production environments ahead of production upgrade          | Basic (default)<br />Scale, Enterprise tiers |
  | **Regular**              | Default release channel for all multi replica services.<br />Rollout on this channel typically begins two weeks after the Fast release channel starts.                                                                          | Default/ fleetwide upgrades.<br />Services are upgraded gradually over multiple weeks                                                | Scale and Enterprise                         |
  | **Slow (Deferred)**      | Recommended for those more risk averse users that want their services to be upgraded towards the end of the release schedule.<br />Rollout on this channel typically begins two weeks after the Regular release channel starts. | Maximum stability and predictability.<br />Meant for those that need more testing of new releases on either the Fast/Regular channel | Enterprise                                   |

  <br />

  <br />

  <Note>
    All single replica services are automatically enrolled in the Fast release channel.
  </Note>
</Accordion>

Scheduled upgrade windows are available for all release channels for services in the Enterprise tier. This feature allows you to configure a time window on a given day of the week for upgrades.

<h2 id="release-schedule">
  Release schedule
</h2>

<Warning>
  **Understanding release dates**

  The dates shown below indicate when ClickHouse **begins the rollout** to each release channel, not when your individual service will be upgraded.

  * Rollouts are automated and occur gradually over multiple weeks
  * Services with configured scheduled upgrade windows are upgraded during their scheduled window in the week after the channel rollout ends (starting on Monday 00:00 UTC)
  * Rollout completion may be delayed due to rollout pauses (e.g., holiday freezes) or health monitoring

  For advance testing before production upgrades, use the Fast or Regular channel for non-production services and the Slow channel for production services.
</Warning>

<ReleaseSchedule
  releases={[
{
 changelog_link: 'https://clickhouse.com/docs/changelogs/26.4',
 version: '26.4',
 fast_start_date: '2026-06-22',
 fast_end_date: 'TBD',
 regular_start_date: 'TBD',
 regular_end_date: 'TBD',
 slow_start_date: 'TBD',
 slow_end_date: 'TBD',
 fast_progress: 'green',
 regular_progress: 'green',
 slow_progress: 'green',
},
{
 changelog_link: 'https://clickhouse.com/docs/changelogs/26.2',
 version: '26.2',
 fast_start_date: '2026-04-03',
 fast_end_date: '2026-04-14',
 regular_start_date: '2026-05-06',
 regular_end_date: '2026-06-17',
 slow_start_date: '2026-07-01',
 slow_end_date: 'TBD',
 fast_progress: 'green',
 regular_progress: 'green',
 slow_progress: 'green',
 fast_delay_note: 'Services with upgrade windows will be upgraded starting 2026-04-15.',
},
{
 changelog_link: 'https://clickhouse.com/docs/changelogs/25.12',
 version: '25.12',
 fast_start_date: '2026-02-10',
 fast_end_date: '2026-02-11',
 regular_start_date: '2026-03-09',
 regular_end_date: '2026-03-18',
 slow_start_date: '2026-04-07',
 slow_end_date: '2026-04-09',
 fast_progress: 'green',
 regular_progress: 'green',
 slow_progress: 'green',
 regular_delay_note: 'Services with scheduled upgrade windows will receive 25.12 during their scheduled window in the week after Mar 23',
 slow_delay_note: 'Services with scheduled upgrade windows will receive 25.12 during their scheduled window in the week after Apr 13',
},
{
 changelog_link: 'https://clickhouse.com/docs/changelogs/25.10',
 version: '25.10',
 fast_start_date: '2025-12-11',
 fast_end_date: '2025-12-15',
 regular_start_date: '2026-01-23',
 regular_end_date: '2026-03-10',
 slow_start_date: '2026-03-23',
 slow_end_date: '2026-03-23',
 fast_progress: 'green',
 regular_progress: 'green',
 slow_progress: 'green',
},
{
changelog_link: 'https://clickhouse.com/docs/changelogs/25.8',
version: '25.8',
fast_start_date: 'Completed',
fast_end_date: 'Completed',
regular_start_date: '2025-10-29',
regular_end_date: '2025-12-19',
slow_start_date: '2026-01-27',
slow_end_date: '2026-02-04',
fast_progress: 'green',
regular_progress: 'green',
slow_progress: 'green',
}
]}
/>