Hello, Does anyone know of an upcoming iPhone 4 case that adapts the device to the size of the 3GS? I use an accessory called the zGrip iPhone Pro - but it is form-fitted to the 3GS, and I want to use it with the iPhone 4. I called the company, and they have no plans to update the device, hence my question: Is there a case floating around out there that can give the iPhone 4 the same dimensions (at least in width and height) as the 3GS? Do the Bumpers come close to doing this? Thanks.