Apple’s upcoming iPhone 3G S graphics processor, PowerVR SGX will supports hardware
acceleration of both OpenGL ES 1.1 and 2.0. However, the PowrerMBX found in the iPhone 3G supports 1.1 alone.

Apple’s upcoming iPhone 3G S graphics processor, PowerVR SGX will supports hardware
acceleration of both OpenGL ES 1.1 and 2.0. However, the PowrerMBX found in the iPhone 3G supports 1.1 alone.

Here is where the problem begins, OpenGL ES 1.1 and 2.0 are completely incompatible with each other, apps
need to be written to support both to be
compatible on both platforms.

Naturally, it will also mean there will be changes done to Apple’s App store to reflect and indicate the changes on the platform it will support and run on.

Apple’s iPhone 3G S will retail on US stores soon, check here to compare the specifications