What's the latest Version of Pirates and Nomads

[Tnarg]

I noticed that the Version on the disk is v3.0, and I downloaded a Version from PBW that was only v2.5PBWspecial, but it seemed to have additional features.

Is the one off the disk the most recent or are there further additions?

Also, this will be the first time that I try it out, can anyone give me a basic premise ie: difference between playing a regular, pirate, or nomad?

How is the AI, I will probably play by my self till I get used to it?

Any other features that one might to clue me in on would be much appriciated.

If there is a later Version, might you be so kind to direct me in the proper direction.

Thanks