DPlot: http://www.dplot.com/beta/dplotbeta.exe
DPlot Jr: http://www.dplot.com/beta/dplotjrbeta.exe
DPlot Viewer: http://www.dplot.com/beta/dplotvubeta.exe
Edit: Links changed to the normal release versions; all changes mentioned below are included.
Changes, in addition to those listed for the previous beta version:
Plot extents established with Get Preferences (rather than Extents/Tick Marks/Size) for XY plots were sometimes saved improperly to DPlot files.
New Invert X and Invert Y features on the Extents/Tick Marks/Size dialog were saved to DPlot files improperly and caused an error message when the file was reopened.
User-specified extents on all plots of 3D points are now fully functional. Previous beta used the Z extents only to set the extents of the axes and had no effect on how much of the surface was drawn. In this beta,
Full extents:

Same plot with user-specified Z extents:

And the corresponding waterfall plot:

Thanks to Nico Wyngaarden and Russell Born for their assistance with the bugs.