Now my review is based on the first day that I have spent with Gears of War 3 and already, it refuses to let go. Judging from the screens, I'm pretty sure that you already know what to expect from the graphics department.
Gameplay wise- Well, it is your typical Gears formula with plenty of taking cover and shooting. However, it has been beefed up because guns feel more powerful than ever, with the Retro lancer being most definetly welcome.
The campaign puts the last two Gears games to shame, let's put it at that.
The multiplayer- Well with dedicated servers, matchmaking is faster so you don't have to wait for an eternity in the lobby. This also means that there is no more host advantage so expect less ragequits online because you have just as much lag advantage as the other guy. The game modes themselves are fun and Capture the Leader is a must-play. I can say with confidence that Gears 3's multiplayer is one to be played for years to come.
Now I do not know what to say about Horde and Beast mode because I am not generally a fan of fighting endless waves of enemies. But with that being said, Gears of War 3 is worth its full price for the exquisite and robust Campaign and Multiplayer modes.
If you are a fan of the past two titles, there is no excuse for you to pass on the superior-in-every-way sequel.