Cms-9

3 Articles

Breaking changes in CMS 9

16 min

Updated17 Sep 2026

To view the complete list of changes, see the release notes feed /epiui/CMS/Content/documentation/Release-Notes,,82523/? epieditmode=False .

Episerver Mail 8

2 min

Updated26 Aug 2026

This version is compatible with Optimizely Content Management System (CMS 9). New version of Structure Map in CMS 9.

Upgrade to CMS 9

3 min

Updated19 Sep 2026

No data migration is required; updating to Optimizely Content Management System (CMS 9) is no different from updating to the feature updates delivered previously via NuGet. To make sure the upgrade is as smooth as possible, there are a few steps that you may want to take that are discussed in the next sections.