← Back to all sparks
U

Umbraco CMS

MARKETING
Velocity5.0

Open-source .NET content management system

Umbraco runs parallel release candidates across v13, v17, and v18, with both current tracks approaching their next minor GA.

cmsopen-sourcedotnetrelease-cadencelts
Current state
Umbraco is running a steady cadence of release candidates across three active version tracks: v13 (LTS), v17 (current stable), and v18 (latest). The visible changes are mostly dependency updates and targeted bug fixes. The installer connection string fix — writing to the correct appsettings.*.json fallback — appears across both the v17 and v18 RCs, indicating a shared backport.
Where it's heading
The parallel RC activity across v17 and v18 suggests both tracks are close to minor GA releases. The v18 track removed the @hey-api/openapi-ts dependency from the login module, a sign of ongoing internal housekeeping as the v18 API surface stabilizes. No large feature work is visible in recent entries; this is a stabilization and maintenance phase.
Prediction
v18.2.0 and v17.7.0 will ship to stable shortly after the RC cycle, with v18 continuing to accumulate UX and developer experience improvements while v17 and v13 receive security and compatibility maintenance.

Recent moves

  1. 13d ago

    Umbraco 18.2.0 release candidate

    18.2.0-rc fixes the installer's connection string write target to respect appsettings.*.json fallback order and updates npm dependencies. A routine pre-release candidate with no new user-facing features.

    View source ↗
  2. 13d ago

    Umbraco 17.7.0 release candidate

    17.7.0-rc carries the same installer fix as 18.2.0-rc to the current stable track alongside Tiptap editor and other dependency updates.

    View source ↗
  3. 1mo ago

    Umbraco 18.1.0 RC2 — migration and auth fixes

    18.1.0-rc2 patches a missing content-type index during upgrades from 18.0 and fixes a token refresh rejection misclassified as a session timeout; both are regression fixes from RC1.

    View source ↗
  4. 1mo ago

    Umbraco 17.6.0 RC2 — auth and notification fixes

    17.6.0-rc2 mirrors the auth token fix from 18.1.0-rc2 and adds a ContentSavedNotification that now correctly fires on save-and-publish operations.

    View source ↗
  5. 1mo ago

    Umbraco 18.1.0 RC — login module cleanup and UI upgrades

    18.1.0-rc removes the @hey-api/openapi-ts dependency from the login project and upgrades UI components including UUI to 1.18.x, continuing v18's progressive dependency modernization.

    View source ↗
  6. 1mo ago

    Umbraco 17.6.0 release candidate

    17.6.0-rc brings the LTS track into alignment with security advisory patches in MessagePack and other NuGet updates, alongside UUI and Examine upgrades.

    View source ↗