updated Release notes

release_docs/RELEASE.txt

@@ -394,7 +394,7 @@ New Features
       h5eappend_stack_f, h5eget_current_stack_f, h5eset_current_stack_f, h5ecreate_stack_f,
       h5eclose_stack_f, h5epop_f, h5eprint_f (C h5eprint v2 signature)
 
-    - Add API support for Fortran MPI_F08 module definitions:
+    - Added API support for Fortran MPI_F08 module definitions:
       Adds support for MPI's MPI_F08 module datatypes: type(MPI_COMM) and type(MPI_INFO) for HDF5 APIs:
       H5PSET_FAPL_MPIO_F, H5PGET_FAPL_MPIO_F, H5PSET_MPI_PARAMS_F, H5PGET_MPI_PARAMS_F
       Ref. #3951
@@ -1387,6 +1387,10 @@ Known Problems
     The subsetting option in ph5diff currently will fail and should be avoided.
     The subsetting option works correctly in serial h5diff.
 
+    Flang Fortran compilation will fail (last check version 17) due to not yet
+    implemented: (1) derived type argument passed by value (H5VLff.F90),
+    and (2) support for REAL with KIND = 2 in intrinsic SPACING used in testing.
+
     Several tests currently fail on certain platforms:
         MPI_TEST-t_bigio fails with spectrum-mpi on ppc64le platforms.