A new filesystem, called FSX, is under development to remove some limitations of FSFS. It was added in Versionversion 1.9 and not considered production-ready.<ref>{{Cite web|url=https://subversion.apache.org/docs/release-notes/1.9.html#fsx|title = Apache Subversion 1.9 Release Notes}}</ref> As of version 1.14, it is still marked as experimental.<ref>{{cite web |url=https://subversion.apache.org/docs/api/1.14/group__svn__fs__backend__names.html#ga5b95fecdc34bccacc58e552494dd0889 |title=Subversion: Built-in back-ends |quote=#define SVN_FS_TYPE_FSX "fsx"<br>EXPERIMENTAL filesystem backend.<br>It is not ready for general production use. Please consult the respective release notes on suggested usage scenarios. |access-date=2025-07-25}}</ref>
