The conquest version can be downloaded at this thread.
The PTW version has now been shelved.
Instructions:
A) Download Beta version, (Big file) and unzip to your CIV3PTW/Scenarios folder.
B) Download v1_1b and unzip it to your CIV3PTW/Scenarios folder, answer yes to everything.
C) Download v1_2b and unzip it to your CIV3PTW/Scenarios folder, answer yes to everything.
d) Download v1_21b and unzip it to your CIV3PTW/Scenarios folder, answer yes to the two files.
Have fun.

Preview thread
Here is a lengthy readme and list of files included in the two patches

Here is the title screen reduced 20%
There is a troubleshooting guide 3 posts down

This one (as opposed to the alpha) comes with all the units I have built, plus most of the other on-line sci-fi units, currently only about 30% of them are used in the mod, but that will change with future patches.
Also there is a ton of new artwork, including buildings, civilopedia icons, wonder splashes, and resources.
The first age Colonization is fairly well sanded, allthough it could use more polish. The second age Expansion is rough around the edges, the third and fourth are just big chunks of rock, with no ryhme or reason. More info can be found in the readme.