- The unreachable taint gets applied to a node when it loses its network connection. ([#67734](https://github.com/kubernetes/kubernetes/pull/67734), [@Huang-Wei](https://github.com/Huang-Wei))

* kube-apiserver: fixes error creating system priority classes when starting multiple apiservers simultaneously ([#67372](https://github.com/kubernetes/kubernetes/pull/67372), [@tanshanshan](https://github.com/tanshanshan))

- Kubernetes components that perform leader election now only support using `Leases` for this. ([#114055](https://github.com/kubernetes/kubernetes/pull/114055), [@aimuz](https://github.com/aimuz))

- Fixed cluster autoscaler addon permissions so it can access batch/job. ([#69858](https://github.com/kubernetes/kubernetes/pull/69858), [@losipiuk](https://github.com/losipiuk))

- The topology manager aligns resources for pods of all QoS classes with respect to NUMA locality, not just Guaranteed QoS pods. ([#83492](https://github.com/kubernetes/kubernetes/pull/83492), [@ConnorDoyle](https://github.com/ConnorDoyle))

### Bug or Regression

- Fix a scheduler preemption issue where the victim pod was not deleted due to incorrect status patching. This issue occurred when the preemptor and victim pods had different QoS classes in their status, causing the preemption to fail entirely. ([#126693](https://github.com/kubernetes/kubernetes/pull/126693), [@Huang-Wei](https://github.com/Huang-Wei)) [SIG Scheduling]

* Disallow PriorityClass names with 'system-' prefix for user defined priority classes. ([#59382](https://github.com/kubernetes/kubernetes/pull/59382), [@bsalamat](https://github.com/bsalamat))

* Scheduler should terminate when it looses leader lock. ([#81306](https://github.com/kubernetes/kubernetes/pull/81306), [@ravisantoshgudimetla](https://github.com/ravisantoshgudimetla))

- Removed "endpoint-controller" and "workload-leader-election" FlowSchemas from the default APF configuration.
  
  migrate the lock type used in the leader election in your workloads from configmapsleases/endpointsleases to leases. ([#131215](https://github.com/kubernetes/kubernetes/pull/131215), [@tosi3k](https://github.com/tosi3k)) [SIG API Machinery, Apps, Network, Scalability and Scheduling]

### Bug or Regression