Start saving your cash and begin building up your mental tolerance for gore. Microsoft just announced that Gears of War 3 will be released worldwide on September 20. If your calendar isn't at hand, don't worry about marking the date -- we're quite certain Microsoft will spend more than the GDP of some countries on Gears advertising. Later this summer, you won't be able to not see the Gears of War 3 date.
In the meantime there's Bulletstorm, which serves both as a way to build up that mental tolerance and as a delivery system for the upcoming Gears 3 beta.