The Developer News Window
After exploring many different ways to talk to our active customers, we finally realized the best way to do it was right in the application itself. By talking to users inside the application, we can reach them as they’re most likely to need the information we’re providing.
I tried adding something like this to my apps and was told by App Review that it violated rule 2.21 “Apps may not use update mechanisms outside of the App Store.” They allowed it when I explained that it was only an emergency communication mechanism.