v1.16.2 v1.17.0
high risk
BITyia/DroneSplatSep 10, 2026 → Sep 10, 20260 days between releases
What's New
Major version bump adds Linux 6.18 support and transparent huge pages with incompatible snapshot format.
Breaking Changes
- Snapshot format version bumped (incompatible with previous versions).
New Features
- Support for Linux 6.18 guest kernels.
- Support for bzImage guest kernels on x86_64.
- Transparent huge pages option for guest memory.
- New metrics fields `emit_id` and `properties` via API.
- Virtio device reset support.
Improvements
- Host kernel 6.10+ check for CLIRD_EL1 override to improve guest performance.
Upgrade Notes
Snapshots created with v1.17.0 are incompatible with v1.16.2; you must recreate them. New metrics API fields `emit_id` and `properties` are available but opt-in. Ensure host kernel is >= 6.10 for optimal performance.
The Two Releases
v1.16.2
Firecracker v1.16.2
Sep 10, 2026· 1 month ago
Maintenance release fixing critical vsock, virtio-mem, and logger issues.
Full release notesv1.17.0
Firecracker v1.17.0
Sep 10, 2026· 1 month ago
MicroVM hypervisor release adding support for newer kernels, metrics, and huge page options.
Full release notes