Yocto Project 6.0 "wrynose" is out
The Yocto Project 6.0, codenamed wrynose, was released on May 13, 2026. This is the new Long-Term Support (LTS) release, succeeding 5.0 "scarthgap". My name is in the contributors list for this release.
If you are migrating from 5.0, make sure to read the migration guides for the intermediate releases: 5.1 (styhead), 5.2 (walnascar), and 5.3 (whinlatter).
Major component upgrades
Toolchain and core component versions:
- Linux kernel 6.18
- GCC 15.2
- glibc 2.43
- LLVM/Clang 22.1.3
- Python 3.14.4
- systemd 259.5
- Go 1.26.2, Rust 1.94.1
- QEMU 10.2.0
- U-Boot 2026.01
Over 300 recipe upgrades in total.
Rust in the Linux kernel
One of the most significant additions is first-class Rust support for building the Linux kernel and out-of-tree kernel modules:
- A new kernel-yocto-rust class adds the required dependencies to build Rust components of the kernel.
- A new module-rust class supports building out-of-tree Rust kernel modules. A skeleton example is available under meta-skeleton/recipes-kernel/rust-out-of-tree-module.
- Enabling Rust in the kernel is now as simple as adding rust to KERNEL_FEATURES in a recipe that inherits kernel-yocto.
Security improvements on by default
Several security and hardening features that were previously opt-in are now enabled by default in the nodistro setup:
- security_flags.inc — adds security-related compiler and linker flags.
- no-static-libs.inc — disables most static libraries.
- uninative — allows reuse of native sstate built on one distro on another, also enabled by default now.
- OpenSSL now disables TLS 1.0/1.1 by default.
New SBOM and CVE tooling
CVE analysis and SBOM generation changed substantially:
- A new sbom-cve-check class replaces the old cve-check class for post-build CVE analysis of images. It uses the new python3-sbom-cve-check tool internally.
- A new sbom-cve-check-recipe class allows CVE analysis at the recipe level, without building the full software.
- SPDX 2.2 support has been dropped; the project now supports SPDX 3 only.
- New variables SPDX_INCLUDE_KERNEL_CONFIG and SPDX_INCLUDE_PACKAGECONFIG allow exporting richer metadata into SPDX documents.
BitBake and tooling improvements
bitbake-setup changes:
- Non-destructive update behavior: local commits and modifications are preserved during bitbake-setup update.
- Shared State is now shared between builds by default (SSTATE_DIR and BB_HASHSERVE_DB_DIR set in site.conf).
- VSCode configuration files are now generated by default.
- The unpack_update() function allows updating a Git repository in-place.
WIC is now an external project
The WIC image creator tool has been extracted from OpenEmbedded-Core and is now maintained as a standalone project. The recipe in OE-Core now builds from this external source. A new wicenv image type was also added.
devtool IDE integration
devtool ide-sdk improvements:
- gdbserver attach mode support.
- GDB pretty-printing for C++ STL types.
- Kernel module development support.
What's next
Wrynose will receive long-term maintenance. If you are on scarthgap (5.0), plan your migration with the Yocto Project documentation.