Release Notes: Two new functions were added to the library API: plsmem and plgriddata (this one allows 3D plots of irregularly sampled data). The configuration scheme has been improved and many bugs have been fixed.
Release Notes: A new portrait mode, a new -drvopt command-line option which allows you to set options for particular drivers, and a new pstex driver.
Release Notes: New features include an Octave front-end and PNG and JPEG drivers. A Perl front end is being started, as well as a GNOME driver.