November 2025 and Beyond

Umbraco 17 is scheduled for release on 27 November 2025. Unlike standard releases, this one is an LTS (Long-Term Support) version. That means it will receive three full years of support, including security patches and bug fixes, through to November 2028.

For agencies and businesses, LTS provides stability, predictable maintenance, and far fewer disruptive upgrade cycles compared with Standard-Term Support releases, which typically only last around six months.

• Reduced Upgrade Pressure, instead of rushing upgrades every few months, you can safely remain on 17 for years.
• Stronger Client Trust, clients value long-term reliability and fewer risks of downtime.
• Lower Costs Over Time, planned, scheduled upgrades are cheaper than emergency fixes.
• Better Planning, you can align development roadmaps, hosting, and integrations around a secure and stable foundation.

In short, LTS makes life easier for agencies managing multiple client sites, while offering peace of mind to businesses that depend on Umbraco day-to-day.

If you are currently running Umbraco 14, 15 or 16, now is the time to prepare:

1. Audit your site. Review custom code, integrations, and packages to ensure they are compatible.
2. Check dependencies. Umbraco 17 will be based on .NET 10, so libraries and infrastructure must also be ready.
3. Plan migrations early. Schedule development and testing so you are not caught out once older versions hit end of life.
4. Communicate with clients. Explain why moving to an LTS version protects their site and reduces long-term costs.

Upgrading to Umbraco 17 LTS is not just a technical decision, it is a business strategy. By staying ahead:

• You demonstrate proactive service to clients.
• You avoid unexpected security risks from running unsupported versions.
• You position your agency as a long-term partner, not just a quick-fix provider.

With Umbraco 17, the new backoffice experience (introduced in Umbraco 14) will be more mature, refined, and stable, making it the best version to standardise on for future projects.

Umbraco 17 LTS offers agencies and businesses the chance to settle onto a stable, supported, and future-ready platform until late 2028.

Start your planning now, align your roadmap with .NET 10, and make sure you are ready to take advantage of a version designed for the long haul.