This is the next service release to update the stable version 1.6. Here's the full changelog:

• IMAP: Partial support for ANNOTATE-EXPERIMENT-1 extension (RFC 5257)
• OAuth: Support standard authentication with short-living password

received with OIDC token (#9530)

• Fix PHP warnings (#9616, #9611)
• Fix whitespace handling in vCard line continuation (#9637)
• Fix current script state after initial scripts creation in

managesieve_kolab_master mode

• Fix rcube_imap::get_vendor() result (and PHP warning) on Zimbra server

(#9650)

• Fix regression causing inline SVG images to be missing in mail preview

(#9644)

• Fix plugin "virtuser_file" to handle backward slashes in username (#9668)
• Fix PHP fatal error when parsing some malformed BODYSTRUCTURE

responses (#9689)

• Fix insert_or_update() and reading database server config on

PostgreSQL (#9710)

• Fix Oauth issues with use_secure_urls=true (#9722)
• Fix handling of binary mail parts (e.g. PDF) encoded with

quoted-printable (#9728)

• Fix links in comments and config to https:// where available (#9759,

#9756)

• Fix decoding of attachment names encoded using both RFC2231 and

RFC2047 standards (#9725)

This version is considered stable and we recommend to update all productive installations of Roundcube with it. Please do backup your data before updating!

https://github.com/roundcube/roundcubemail/releases/tag/1.6.10

Please do backup your data before updating!