On the backend side of things, PyTorch will see some changes, which might affect user-written C and C++ extensions. We are replacing (or refactoring) the backend ATen library to incorporate features and optimizations from Caffe2.
Last Words
We aim to release 1.0 some time during the summer. You can follow-along our progress on the Pull Requests page.
You can read this from the perspective of the Caffe2 project at: https://caffe2.ai/blog/2018/05/02/Caffe2_PyTorch_1_0.html