It looks like Watch Dogs got more than just anin the past week.
It turns out that the title has also received a revised rating from the Classification Board, moving from an MA15+ (strong themes and violence, gaming experience may change online) to an R18+ (references to sexual violence and sex scenes). The initial rating was given on 13 September 2013, while the new one is dated 11 March this year.
Intriguingly, the Classification site still lists both ratings.
The changes to the Australian rating include moving Drug Use from Mild Impact to Strong Impact and Violence from Strong Impact to High Impact.
The Classification Board usually only reclassifies a game on the back of complaints regarding the rating. This change could signify that Ubisoft altered a great deal of the gameplay and story during the delay period, requiring a reclassification. We've asked Ubisoft Australia for an official comment on the classification changes and we'll update if more information comes to hand.