Sometimes it takes Apple awhile to see the light. Steve Kovach on an upcoming change in iOS 9 for iPhone and iPad that many users feel is long overdue, me included.
Now, when you press the shift key, the letters on the keyboard change to either lowercase or capital. Before, the shift-key arrow would only turn black or light gray to let you know if you were typing in capital or lowercase letters, which was confusing to a lot of users.
Long overdue, Apple.