Nvidia announced its quad core processors with 12 core GPU's. Sounds years away right? Nope, August of this year for tablets and the end of the year for phones. They will smoothly run hugely complex multimedia at 2560*1440 resolution on a 10" tablet.
If Apple is going to continue using its own processor they better come up with something big for the iPad 3. If they want to stay competitive in the market though.
Just for reference, the iPhone 4's screen is 326 DPI, this will be 300DPI and the current iPad is 132DPI so it's a huge difference in clarity.
Looks like I'll be upgrading my Motorola Xoom in August.