# Libentensorflow

Published articles for Libentensorflow.

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## What's new in TensorFlow 2.19

DevFeed: [What's new in TensorFlow 2.19](<https://devfeed.tech/articles/what-s-new-in-tensorflow-2-19-7421.md>)

Original publisher: [Read original article](<https://blog.tensorflow.org/2025/03/whats-new-in-tensorflow-2-19.html>)

Author: TensorFlow Blog (noreply@blogger.com)

Published: 2025-03-13T16:00:00Z

Content type: release

Language: en

Sources: [The TensorFlow Blog](<https://devfeed.tech/sources/the-tensorflow-blog.md>)

Topics: [Tensorflow](<https://devfeed.tech/topics/tensorflow.md>), [LiteRT](<https://devfeed.tech/topics/litert.md>), [releases](<https://devfeed.tech/topics/releases.md>), [API](<https://devfeed.tech/topics/api.md>), [C++](<https://devfeed.tech/topics/c-plus-plus.md>), [Release notes](<https://devfeed.tech/topics/release-notes.md>), [Keras](<https://devfeed.tech/topics/keras.md>), [migration](<https://devfeed.tech/topics/migration.md>)

Tags: [2025](<https://devfeed.tech/tags/2025.md>), [announcement](<https://devfeed.tech/tags/announcement.md>), [api](<https://devfeed.tech/tags/api.md>), [c-plus-plus](<https://devfeed.tech/tags/c-plus-plus.md>), [keras](<https://devfeed.tech/tags/keras.md>), [libentensorflow](<https://devfeed.tech/tags/libentensorflow.md>), [litert](<https://devfeed.tech/tags/litert.md>), [migration-guide](<https://devfeed.tech/tags/migration-guide.md>), [pypi](<https://devfeed.tech/tags/pypi.md>), [release](<https://devfeed.tech/tags/release.md>), [release-notes](<https://devfeed.tech/tags/release-notes.md>), [tensorflow](<https://devfeed.tech/tags/tensorflow.md>), [tensorflow-core](<https://devfeed.tech/tags/tensorflow-core.md>), [tensorflowlite](<https://devfeed.tech/tags/tensorflowlite.md>)

### AI overview

TensorFlow 2.19 introduces C++ API changes in LiteRT, adds bfloat16 support for the tflite casting operation, and deprecates tf.lite.Interpreter in favor of ai_edge_litert.interpreter. The release also stops publishing libtensorflow packages, although they remain extractable from the PyPI package. Updates for multi-backend Keras are directed to keras.io.

### Source excerpt

Posted by the TensorFlow team TensorFlow 2.19 has been released! Highlights of this release include changes to the C++ API in LiteRT, bfloat16 support for tflite casting, discontinue of releasing libtensorflow packages. Learn more by reading the full release notes. Note: Release updates on the new multi-backend Keras will be published on keras.io, starting with Keras 3.0. For more information, please see https://keras.io/keras_3/. TensorFlow Core LiteRT The public constants tflite::Interpreter:kTensorsReservedCapacity and tflite::Interpreter:kTensorsCapacityHeadroom are now const references, rather than constexpr compile-time constants. (This is to enable better API compatibility for TFLite in Play services while preserving the implementation flexibility to change the values of these constants in the future.) TF-Lite tfl.Cast op is now supporting bfloat16 in the runtime kernel. tf.lite.Interpreter gives a deprecation warning redirecting to its new location at ai_edge_litert.interpreter, as the API tf.lite.Interpreter will be deleted in TF 2.20. See the migration guide for details. Libtensorflow We have stopped publishing libtensorflow packages but it can still be unpacked from the PyPI package.