Big iPhone Screen or Small iPhone Screen, Do Developers Care?

"If the rumors pan out and Apple's next-generation iPhone features a larger 4-inch screen, developers say they don't think the change will be a major problem."

I'm not so sure they really care, although it's funny to me they are calling a switch to a larger screen on the next iPhone "pulling an Android." What they mean by that is having to design apps to fit on multiple screen sizes, which is what would happen if Apple moved to larger screen with the iPhone 5, since the 3G/3GS/4/4S all run on the 3.5 inch screen. I think they would be happier if it stayed the same and I don't think Apple needs to move up in screen size, I like the 3.5 inch screen just fine. What are your thoughts about all this talk on a larger screen for the next iPhone?