Deus Ex is the single greatest single player gaming experience ever created. It's like playing the lead character in the best science fiction thriller action spy film ever made and all 10 of its awesome sequels. Its absolutely vast, remarkably open ended and really, the plot is the best ever used in any game ever. They were working on a film adaptation for a time but it fell through, itd have been compelte rubbish anyway. The only way to make it work on film would be to get JMS to do a high budget TV series.
Invisible war is best left totally unmentioned. If they are going to do a Deus Ex 3, it should be a ground up remake of the first game, made even bigger, even more open ended and with a little more refinement in the RPG side of the game.
I have not played any game which holds a candle to Deus Ex, and I suspect I never will, its a damn shame that it has aged poorly compared to other games from the period, the graphics were a little aged even at release.
The HDTP project has been stuttering along for years, although there is a partial release available now. The speedrun of the game is done on realistic difficulty in about 40 minutes. Which is absolutely insane.
Now im going to go read about dx3.