http://www.incgamers.com/News/21285/...s-not-complete
to sum up UBI have followed the trend set by Batman Arkham Asylum and have released a game missing a large portion of its contents which will be activated by a patch at some point, this approach failed on the Batman game (which was amazing btw) as the hackers and programmers were able to find the game breaking areas and fix these intentional bugs.
From UBI response I am pretty sure this is the case with SH5.