TrueNAS “Goldeye” Testers are in for a treat as this latest beta release brings dozens of new features and hundreds of fixes to the table, making it an exciting time to take the platform through its paces before its October 2026 release. But what exactly does this mean? Dive into the world of swift app development with TrueNAS and discover the highlights that make this release truly special.
Updated Linux Kernel and NVIDIA Blackwell Support
The Linux Long-Term Support (LTS) Kernel has been updated from 6.12.15 to 6.12.33, ensuring a more reliable and stable experience for users. Additionally, TrueNAS 25.10 now uses the NVIDIA Open Source GPU Kernel modules with the 570.172.08 driver, adding support for the latest NVIDIA GPUs including the RTX 50-series and RTX PRO Blackwell cards. This change means that several older GTX GPUs are no longer supported, so be sure to check out the list of compatible GPUs on NVIDIA’s GitHub repository and review the TrueNAS Community Forum thread to determine if your card is supported with the new Open Kernel module.
ZFS 2.3.3 Adds New Tools and Performance Boosts
The ZFS File Rewrite extension allows datasets and files to be rewritten to your ZFS pool and updated with the latest changes made to vdev layout, compression algorithm changes, and deduplication functionality. This command can be used as a method of rebalancing data after vdev addition or RAIDZ expansion, and has no impact on file modification time, ownership, or permissions. For advanced users, Goldeye will expose this capability from the TrueNAS CLI.
Furthermore, Faster Caching is enabled through Adaptive Replacement Cache (ARC) improvements, including greater parallelization of operations and eviction speeds for data that is no longer valuable to be cached in RAM. High-performance systems with multiple cores and fast NVMe devices will benefit most from these improvements. DirectIO also allows file protocols to avoid the ARC if caching does not improve performance for specific datasets.
TrueNAS Versioned API Enhances Integration Options
A new, fully-versioned, and much faster JSON-RPC 2.0 over WebSocket implementation has been introduced with TrueNAS 25.10. The previous REST API has been deprecated, and will be fully removed in a future TrueNAS release. This new versioned API allows for predictable compatibility for software integrations across TrueNAS upgrades, including a Kubernetes Container Storage Interface (CSI), VMware vSphere plugin, Incus iSCSI connectivity, and Proxmox “ZFS-over-iSCSI” plugin, among others.
New TrueNAS Update Advisor and Profiles
The update process has been overhauled in TrueNAS 25.10, allowing users to select their “User Profile” directly in the Web UI. Users can now choose from General, Early Adopter, or Developer release timing and only be alerted for updates once they’re moved to the matching profile on the Software Status page.
Virtualization is Cleaner
TrueNAS 25.10-BETA includes separate tabs for its two different Virtualization solutions – lightweight Linux Containers (LXC) under the Instances tab, and full KVM-powered Virtual Machines (VM) available under the Virtualization tab. Both tabs have been updated to be easier to navigate, with access to a TrueNAS-managed catalog of easy-to-deploy VM and LXC template images.
Migration and Performance
Migration of VMs from both the “Virtualization” and “Instances” tab – including the experimental Instance-powered VMs created in 25.04.0 and 25.04.1 – will be supported automatically. Configurations without PCI or USB passthrough are expected to migrate without issues.
NVMe over Fabric Takes Performance to the Next
With TrueNAS 25.10, virtualization is cleaner than ever before, making it an exciting time for swift app development.