It hasn't been banned, or even had its rating changed at all as far as we can tell, but according to the Australian Classification Board database, a "modified" version of Deus Ex: Human Revolution was rated MA15+ on March 1st 2013.

Deus Ex: Human Revolution was classified MA15+ back in May 2011, flagged with the same "Strong themes, violence and sexual references" consumer advice, and was released on August 25th 2011 (AusGamers 9.2/10). The Australian version wasn't censored or distinct from international releases, so its unclear why the game would be taking another pass through the classification process.

Our local Square Enix reps would only tell us that they "can't make any comment at this time", so we're not really sure what to make of this one. It seems a little late for a Game of the Year/bundled DLC re-release, and the game only had one content expansion, The Missing Link.

Could it be a Wii U or PlayStation Vita port perhaps? Either of those would call for modification to take advantage of their unique hardware. We'll let you know if we find out more.