Almost forgot to mention... Find_Orb has also been updated,
though admittedly not by much. It can now access JPL's DE ephemerides,
which can make for a good speedup when you need to handle lots of
perturbations over longer orbits. It doesn't result in a tremendous
improvement in accuracy, since PS-1996 and ELP (the "analytic" theories
used by Find_Orb, Guide, and most software) are usually massive overkill
anyway. Also, Find_Orb works better under Linux now.

-- Bill