(This will only be interesting to iOS app designers. Sorry, everyone else – here’s this.)
If your app attempts to mirror or match the iPad’s keypad buttons, note that their appearance has changed in iOS 4.2. The shadows are deeper, and there’s a beveled edge at the bottom. No rest for the wicked – go go, update your PSDs.
(Adam Polselli points out that the letters now have a white drop shadow.)
Nice catch by Neven Mrgan.