*** This release of ABINIT is a production version ***

The v8.4.1 was incomplete, the directory tests/bigdft_paral was missing. This has been fixed in ABINITv8.4.2.
Some other minor problems have been fixed also.

For the new features of v8.4 compared to v8.2, please, see the Release notes.
Please, read the Installation notes.
For the list of contributors, see the above-mentioned release notes.

Have fun !
Xavier

Tested with   :  OpenMPI, MPICH2, MPICH3, ATLAS, OpenBLAS, CUDA, Magma, gfortran, ifort, xlf, NAG