Version 1.6.0 is the latest release of PyTorch. In all likelihood 1.8.0 will not be released until sometime next year. PyTorch 1.7.0 is being worked on right now, but is still a few weeks away from release.
You can monitor the progress of v1.7.0 here: https://github.com/pytorch/pytorch/issues/45592 5
Out of curiosity, where did you find information about a “more simple fft api”? No fundamental changes will be made to torch.fft, torch.rfft and similar functions in 1.7.0 or 1.8.0. There are several new helper functions 28 and additions currently being worked, but that is about the extent of changes being made to the spectral functions in PyTorch in the foreseeable future.
Notably, torch.fftshift is being worked on in the helper function PR: https://github.com/pytorch/pytorch/pull/44877 28