TensorFlow 2.1.0: First release candidate available

As Python 2.7 will reach end of life on January 1, 2020, TensorFlow 2.1 will be the last version to support it. TensorFlow is an open source software library for ML that was originally developed by the Google Brain team in 2015. It has since become very popular within the open source community and was found to be the 5th most popular open source project on GitHub in the latest State of the Octoverse report. Among the breaking changes are API renamings as well as removals, and six APIs are now stable. The tensorflow pip package has received an update: GPU support is now included by default for Linux and Windows on machines with and without NVIDIA GPUs.