Release notes for the Revised Catalog of MK Classifications of the Cooler Stars, Philip C. Keenan & Gerald H. Newsom. Entries below describe changes to the catalog in reverse chronological order. 2000 Jan 14: added RA=11-13h 1999 Mar 14: added RA=9-10h 1998 Oct 19: added notes for HD 75021 and HD 75022. 1998 Sep 4: First release of the catalog, RA=0-8h ---------------------------------------------------------------------------