This is the next service release to update the new stable version 1.6. It provides a bunch of fixes after getting your feedback from the previous releases. See the full changelog in the release notes (https://github.com/roundcube/roundcubemail/releases/tag/1.6.10) on the Github download page.
This release is considered stable and we recommend to update all productive installations of Roundcube with this version. Download it from roundcube.net (https://roundcube.net/download).
Please do backup your data before updating!
Source: https://roundcube.net/news/2025/02/08/update-1.6.10-released
Get it Now: https://roundcube.net/download