I'm planning another release in early September, which will be Unifont 7.0.04.
After saying I wouldn't make program changes for the next release, I realized that hex2sfd is not handling combining characters above Plane 0 correctly. I have therefore modified hex2sfd to fix that, and the new version will be in the next release.
Every Plane 1 (Supplemental Multilingual Plane, or SMP) script that was introduced before Unicode 7.0 has at least one person working on its completion, except for a few that cannot be drawn well in a 16-by-16 pixel grid. Those few that will not be drawn are:
Cuneiform Numbers and Punctuation
The grids in the PNG files that Andrew Miller's unihex2png creates have 31 by 31 blank pixel areas for glyphs. The intention is to support a new set of glyphs in the future that will be on a 32 by 32 pixel grid, to contain the above highly detailed scripts. These four scripts contain thousands of glyphs--it will take a while to draw them.
These Plane 1 (SMP) scripts are already slated for inclusion/completion in Unifont 7.0.04, in order of their appearance in Unicode:
Mathematical Alphanumeric Symbols
Arabic Mathematical Alphabetic Symbols
Miscellaneous Symbols and Pictographs
Transport and Map Symbols
Geometric Shapes Extended
Supplemental Arrows - C
Someone has also said he has drawn Elbasan and Caucasian Albanian.
The remaining Plane 1 (SMP) scripts (all introduced in Unicode 7.0) have not been drawn, and nobody has volunteered to draw them:
Linear A (I will draw these later in 2014 if I have time)
Sinhala Archaic Numbers
Pau Cin hau
This is a total of about 1500 glyphs.
If anyone wants to draw any of these, you can email a completed script to me for inclusion in the next release. You will have to agree that the glyphs will share the same license as what is in Unifont: GPLv2+ with the GNU Font Embedding Exception.
Please let me know if you are starting work on a script, to avoid any duplication of effort.
Thanks, and stay tuned,