I figure an update would do well.
Danman has released the 2.0 Beta of 7 Deadly Sins. You have to request playtester status, but he has yet to deny it to anyone. The Kohr-Ah have 5 ships in it, the Marauder and 4 ships that are based off its design. For the most part, they're simply longer, wider, taller, and/or etc than the original. The Arilou are present, but rather incomplete. They will be more polished for the second Beta and the final release.
Danman has also said it's very possible that the Kzer-Za will be ready by the final 2.0 release. They have lots of ships done, possibly enough for every ship in the race to be new.
The biggest problems we've run into are actually concerning the details. The game has a hardcode on how many sounds are possible, so right now there is a limited amount of speech unique to the new races. I've also had problems adding one of the four pictures for the new races in the game. As far as models and unique items for the new races are concerned, however, this mod is doing quite well.