News: Expands their content output.
Ubisoft is planning to increase the amount of content on Steam with 40 IPs. Among the forty are Assassin's Creed and a number of Tom Clancy games.
Jason Holtman, Valve's business development director, had this to say:
"Ubisoft will be delivering the largest library of titles available from any single publisher or developer to Steam. The incredible selection of high quality games from Ubisoft expands the range of genres offered to the millions of PC gamers logging on to Steam every day."