There are 9 texture archives, and 6 or 7 altogether of everything else. There are no loose files-- everything is archived. .bsa is a thing of the past-- All the archives have the .ba2 suffix. There are clean vault tilesets, and there may be others. .Ba2 is, from the name, the second version of .BSA. This means that, unless the archives are somehow compatible with the extraction software we have now, we will see NO texture, sound, or model mods until the archives have been made compatible with mod tools. A delay of a week, at least. source