bait and switch
Google has made a number of changes to its Android Play Store ecosystem recently.
There's now a rudimentary anti-virus provided with the OS, a ban on ad blockers, and, most recently, an official policy on sneaky "off-market" updates...
Apple announced today that the bait-and-switch of software screenshots in the App Store will no longer be allowed.
Once you submit an app, you'll have to stick to your original marketing materlal until the app is updated and re-approved. Good thing.