const Σ = 1 - 0.707i       //            (untyped complex constant)
const Δ = Σ + 2.0e-4       //            (untyped complex constant)
const Φ = iota*1i - 1/1i   //            (untyped complex constant)
</pre>

<p>
Applying the built-in function <code>complex</code> to untyped
integer, rune, or floating-point constants yields
an untyped complex constant.
</p>

<pre>

- CEL regex patterns in x-kubernetes-valiation rules are compiled when CRDs are created/updated if the pattern is provided as a string constant in the expression. Any regex compile errors are reported as a CRD create/update validation error. ([#108617](https://github.com/kubernetes/kubernetes/pull/108617), [@jpbetz](https://github.com/jpbetz))

* Default etcd server version is v3.2.18 compared with v3.1.12 in v1.10 ([#61198](https://github.com/kubernetes/kubernetes/pull/61198))
* Rescheduler is v0.4.0, compared with v0.3.1 in v1.10 ([#65454](https://github.com/kubernetes/kubernetes/pull/65454))
* The validated docker versions are the same as for v1.10: 1.11.2 to 1.13.1 and 17.03.x (ref)

- Component-base/logs: when compiled with Go >= 1.21, component-base will automatically configure the slog default logger together with initializing klog. ([#120696](https://github.com/kubernetes/kubernetes/pull/120696), [@pohly](https://github.com/pohly)) [SIG API Machinery, Architecture,...

* The supported etcd server version is 3.1.12, as compared to 3.1.10 in v1.9 ([#60998](https://github.com/kubernetes/kubernetes/pull/60998))
* The validated docker versions are the same as for v1.9: 1.11.2 to 1.13.1 and 17.03.x ([ref](https://github.com/kubernetes/kubernetes/blob/release-1.10/test/e2e_node/system/docker_validator_test.go))

* Deployments that cannot make progress in rolling out the newest version will now indicate via the API they are blocked
* Introduce apps/v1beta1.Deployments resource with modified defaults compared to extensions/v1beta1.Deployments. ([#39683](https://github.com/kubernetes/kubernetes/pull/39683), [@soltysh](https://github.com/soltysh))

- Changed how KMS v2 encryption at rest can generate data encryption keys.

- The dashboard add-on unchanged from v1.10: v1.8.3. ([#57326](https://github.com/kubernetes/kubernetes/pull/57326))
- Bump Heapster to v1.6.0-beta as compared to v1.5.2 in v1.11  ([#67074](https://github.com/kubernetes/kubernetes/pull/67074))
- Cluster Autoscaler has been upgraded to v1.12.0 ([#s8739](https://github.com/kubernetes/kubernetes/pull/68739))

metrics gathering and debug information dumping must be imported by specific e2e test suites. Init packages are provided which can be imported to re-enable the functionality that traditionally was in the core framework. If you have code that no longer compiles because of this PR, you can use the script [from a commit message](https://github.com/kubernetes/kubernetes/pull/112043/commits/dfdf88d4faafa6fd39988832ea0ef6d668f490e9) to update that code. ([#112043](https://github.com/kubernetes/kubernetes/pull/112043),...