TrueNAS 25.04 ‘Fangtooth’ debuts with Linux foundation and unified SCALE and CORE codebase
TrueNAS 25.04, codenamed “Fangtooth,” was recently released (download here), and with it comes a full embrace of Linux as the underlying base. While previous versions of TrueNAS were confusingly split between CORE (built on FreeBSD) and SCALE (built on Linux), this release finally pushes the project further into its beautiful Linux future.
This version builds on the foundation laid by TrueNAS 24.10 “Electric Eel.” That version brought improved performance and Docker support, and Fangtooth expands on it with more than 1,000 changes, including over 150 bug fixes. The update is being offered as a release version, but iXsystems is still recommending it for early adopters only -- at least for now.