So the article linked below gives a bunch of info and it sounds like they’re going to make a bunch of improvements.
Hopefully they’ll work on the multiplayer modes as well – making it easier to match up with people of the same skill level, and not giving so much advantage to the person hosting the game. I can’t wait for this one to be released later this year.
I personally like these features they revealed:
Gears 2 will have different difficulty settings for each player in co-op. One person can play on Hardcore, one on Casual, for instance. When you are together, the game will understand what that means, and when you split up, you will have individual experiences. Details on how this works exactly are under wraps.
Drop in and drop out co-op.
Many Achievements will be able to be earned in Single or Multiplayer. You can check for instance, if you need 1,000 headshots, you can look at your progress in the journal.
Gears Of War 2 Details Revealed