The SunPy developers are pleased to annouce the first release candidate for version 5.0 of the sunpy core library. If you develop a package that depends on sunpy we would strongly encourage you to test it with sunpy v5.0.0rc1, and report any issues you have on our issue tracker so we can fix them before the final release.
To install the release candidate use either:
pip install --pre sunpy==5.0.0rc1
conda install -c conda-forge/label/sunpy_rc -c conda-forge sunpy