* `tf.tpu.experimental.embedding.TPUEmbeddingV2`
    * Add `compute_sparse_core_stats` for sparse core users to profile the  data with this API to get the `max_ids` and `max_unique_ids`. These numbers will be needed to configure the sparse core embedding mid level api.
    * Remove the `preprocess_features` method since that's no longer needed.

## Thanks to our Contributors

                - name
                type: object
                x-kubernetes-validations:
                - message: Support kinds are core/Service, networking.istio.io/ServiceEntry,
                    gateway.networking.k8s.io/Gateway
                  rule: '[self.group, self.kind] in [[''core'',''Service''], ['''',''Service''],
                    [''gateway.networking.k8s.io'',''Gateway''], [''networking.istio.io'',''ServiceEntry'']]'

  - [Changelog since v1.19.9](#changelog-since-v1199)
  - [Important Security Information](#important-security-information-1)
    - [CVE-2021-25735: Validating Admission Webhook does not observe some previous fields](#cve-2021-25735-validating-admission-webhook-does-not-observe-some-previous-fields)
  - [Changes by Kind](#changes-by-kind-6)
    - [API Change](#api-change-1)
    - [Feature](#feature-4)
    - [Bug or Regression](#bug-or-regression-5)

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