On behalf of SIG Node, we are pleased to announce updates to the Memory QoS feature (alpha) in Kubernetes v1.36. Memory QoS uses the cgroup v2 memory controller to give the kernel better guidance on how to treat container memory. It was first introduced in v1.22 and updated in v1.27. In Kubernetes v1.36, we're introducing: opt-in memory reservation, tiered protection by QoS class, observability metrics, and kernel-version warning for memory.high.