Eidos Montreal can’t take total credit for the hit that is Deus Ex: Human Revolution. It has been revealed that the game’s boss battles were outsourced to another company.
It was G.R.I.P. Entertainment, a Canadian contract company, that actually handled the boss battles. Many reviews made a point to highlight the spike in difficulty of the boss battles; it all makes sense now.
DLC is planned for Deus Ex: Human Revolution and the game is on the way to Macs this winter.