From Absolute Annihilation v4.1 and onward, some portions of a really great package from the TA Arsenal Network (TAAN) known as TA-Evolva has been included.  It is designed to "pretty-up" some of the aging unit designs in Total Annihilation, particularly the Krogoth, which looks pretty sad compared to new units such as the extreme-high-detail Orcone.

My best compliments to them and what they've done!  Be sure to check out their site where you can read up on the very latest information on their work:

http://www.planetannihilation.com/taan



 -Caydr