According to Deus Ex producer David Anfossi, the majority of game testers have been unable to complete the game after six working days, playing six hours each day with the game. "So far with them playing about six hours every day, most of them don't complete the game."
Eidos Montreal recently tweeted: "DX:HR is 25 hours long? Maybe, but if you like to do everything, 25 hours isn't even close."
The game has no set release date, having been delayed to the next fiscal year, meaning anytime after April 2011.