Of all the major changes Apple made to the app store in iOS 6, this one is driving me nuts.
When I update an app, I like to check out the change log before installing. The tiny text link is frustratingly hard to hit on on the iPhone screen and I end up opening the app description. As you can imagine, the problem doesn’t exist on the larger iPad screen.
Luckily the app store is HTML 5 and Apple can update on the fly. With any luck they’ll tweak the font size soon.