Dude...you seriously could not use the search function? there's millions and millions of countless threads on this...
You'll get your Elite Card with a letter from Smisek wishing you to take your business elsewhere if your needs aren't being met at Continental and with 4 Continental Currency Coupons to grab one or two of the new Stirrings Pouch Mixes on your next Continental Flight...
What else are we Elites getting this year? Oh YES! A Discrimination Experience with COPA =)
Welcome Aboard and congratulations on your newfound Silver Elite Status! Now you can shout DYKWIA!!! Booyah!