The Human Revolution mod adds five new races to Distant Worlds and edits one. The standard human race is edited to reflect the background story of this mod, and five more interesting races are also added. This was done because I personally found the human race in DW quite plain and boring. It did not provide for good gameplay, in my opinion, and as an AI adversary seldom proposed any resistance either. That is about to change - the Humans have got company.
The Galactic Newsnet is revamped with an OPTIONAL ADD-ON for Human Revolution. Now you'll get to see Mélissa Theuriau read the news. It makes quite a different experience from the sad vanilla stock pictures!