Take a look at Maroo. They make an excellent case,with equally excellent customer service. The Moko and Roto lines are an excellent case and value, there others to look at as well.
I just got a Casecrown Bold Standby and it works perfectly with the new iPad. All the cutouts line up and despite many claims to the contrary it locks and unlocks the iPad without issue. For $20-25 I'm extremely satisfied.