- Add option to enable leader election in local-up-cluster.sh via the LEADER_ELECT cli flag. ([#127786](https://github.com/kubernetes/kubernetes/pull/127786), [@Jefftree](https://github.com/Jefftree)) [SIG API Machinery]
- Added status for extended Pod resources within the `status.containerStatuses[].resources` field. ([#124227](https://github.com/kubernetes/kubernetes/pull/124227), [@iholder101](https://github.com/iholder101)) [SIG Node and Testing]

	FMOVS	0x44332211(R1), F2	// FMOVS	1144201745(R1), F2
	FMOVD	0x1000000(R1), F2	// FMOVD	16777216(R1), F2
	FMOVD	0x44332211(R1), F2	// FMOVD	1144201745(R1), F2

// shifted or extended register offset.
	MOVD	(R2)(R6.SXTW), R4               // 44c866f8
	MOVD	(R3)(R6), R5                    // 656866f8
	MOVD	(R3)(R6*1), R5                  // 656866f8
	MOVD	(R2)(R6), R4                    // 446866f8

- Changed ownership semantics of PersistentVolume's spec.claimRef from `atomic` to `granular`. ([#110495](https://github.com/kubernetes/kubernetes/pull/110495), [@alexzielenski](https://github.com/alexzielenski))
- Extended ContainerStatus CRI API to allow runtime response with container resource requests and limits that are in effect.

For the conversion of non-constant numeric values, the following rules apply:
</p>

<ol>
<li>
When converting between integer types, if the value is a signed integer, it is
sign extended to implicit infinite precision; otherwise it is zero extended.
It is then truncated to fit in the result type's size.
For example, if <code>v := uint16(0x10F0)</code>, then <code>uint32(int8(v)) == 0xFFFFFFF0</code>.

- Exposed `rest.DefaultServerUrlFor` function. ([#118055](https://github.com/kubernetes/kubernetes/pull/118055), [@timofurrer](https://github.com/timofurrer))
- Extended the Job API for alpha version of `BackoffLimitPerIndex`. ([#119294](https://github.com/kubernetes/kubernetes/pull/119294), [@mimowo](https://github.com/mimowo))

// scheduling guarantees, and they will not be restarted when they exit or when a Pod is
// removed or restarted. The kubelet may evict a Pod if an ephemeral container causes the
// Pod to exceed its resource allocation.
//
// To add an ephemeral container, use the ephemeralcontainers subresource of an existing
// Pod. Ephemeral containers may not be removed or restarted.
message EphemeralContainer {

- The calculations for Pod topology spread skew now exclude nodes that
  don't match the node affinity/selector. This may lead to unschedulable pods if you previously had pods
  matching the spreading selector on those excluded nodes (not matching the node affinity/selector),
  especially when the `topologyKey` is not node-level. Revisit the node affinity and/or pod selector in the

* Display line number on JSON errors ([#25038](https://github.com/kubernetes/kubernetes/pull/25038), [@mfojtik](https://github.com/mfojtik))
* If the cluster node count exceeds the GCE TargetPool maximum (currently 1000), ([#25178](https://github.com/kubernetes/kubernetes/pull/25178), [@zmerlynn](https://github.com/zmerlynn))
    * randomly select which nodes are members of Kubernetes External Load Balancers.

- Fixed panic in Job controller when `podRecreationPolicy: Failed` is used, and the number of terminating pods exceeds parallelism. ([#121147](https://github.com/kubernetes/kubernetes/pull/121147), [@kannon92](https://github.com/kannon92))

- Added readiness gates in extended output for pods ([#70775](https://github.com/kubernetes/kubernetes/pull/70775), [@freehan](https://github.com/freehan))