Engineering notes

Umbraco shipped Umbraco.AI (open source, provider-agnostic) and Umbraco Compose (commercial SaaS) in the same month. What each one costs you, plus the 13 to 17 upgrade 403 and uSync 17.0.4.

Sixty Sitecore items cleared the February window and none came from sitecore.com. What SitecoreAI bundles, what it costs and how fast Pathways migrates all came from personal blogs — one author says outright he never ran the tool.

Thirteen items worth reading from January 2026 and not one from sitecore.com. Editing hosts in preview, Agentic Studio, custom fields via the Marketplace, and the only hard numbers of the month coming from a 10.4 stress test.

Umbraco 13.0.0-13.12.0 got a moderate security patch on 9 December. Everything else the month produced came from 24 Days in Umbraco, plus a new Enterprise bundle and a Q1 2026 date for Compose.

The new Content Hub import/export engine is now the default and existing CI/CD pipelines break. Everything else in December was the community explaining SitecoreAI, Blok, Connect and App Router without a single post from sitecore.com.

Umbraco 17 LTS landed on 27 November on .NET 10, with three years of support. uSync 17.0.0 and Clean Starter Kit v7 shipped the same day. The community had a harder month than the product did.

Symposium folded XM Cloud, CDP, Personalize, Search and Content Hub into SitecoreAI. 106 items harvested, 14 cited, zero published by the vendor. What is confirmed, what is second-hand, and what to check before signing.

A YAML error that writes a 0 KB resource package and still returns success, the JSS to Content SDK decision, and an agentic product surface explained by practitioners instead of by Sitecore.