Update RELEASES.md for 0.16.0

PiperOrigin-RevId: 600469162

Author: TensorFlow Hub Authors

RELEASE.md

@@ -12,18 +12,21 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 ==============================================================================-->
-# Current version 0.16.0-dev
+# Current version 0.17.0-dev
   * Under development
-  * Removed deprecated LatestModuleExporter and register_module_for_export API
 
-# Current version 0.15.0
+# Release 0.16.0
+  * Enforce using Keras 2 by checking for installation of `tf_keras`
+  * Remove deprecated TF 1 API (LatestModuleExporter, register_module_for_export, ...)
+
+# Release 0.15.0
   * Require Python 3.9+.
   * Bump rules_license to 0.0.4.
   * Move `LICENSE` to `tensorflow_hub/LICENSE`.
   * Use `license_files` instead of `license_file` in `setup.cfg`.
   * Remove empty `tools` directory.
 
-# Current version 0.14.0
+# Release 0.14.0
   * Remove make_image_classifier and make_nearest_neighbour_index.
   * Directly load https://hub.tensorflow.google.cn/* handles from GCS.