If you see anything we miss, let us know.
If that is not the case, then I'm afraid you are missing all of the following new stuff (grouped by relation with each other):
mpi-forum/mpi-standard#166
MPI_Remove_error_class
MPI_Remove_error_code
MPI_Remove_error_string
mpi-forum/mpi-standard#840
mpi-forum/mpi-standard#931
MPI_Status_get_source
MPI_Status_set_source
MPI_Status_get_tag
MPI_Status_set_tag
MPI_Status_get_error
MPI_Status_set_error
mpi-forum/mpi-standard#798
MPI_COMBINER_VALUE_INDEX
MPI_Type_get_value_index
mpi-forum/mpi-standard#761
MPI_COMM_TYPE_RESOURCE_GUIDED
mpi-forum/mpi-standard#762
MPI_Get_hw_resource_info
A piece of cake... Now seriously, the list is not so short and some features may need work. That's the reason you surprised me quite a bit when you disclose your plans to release next week.