... but you probably don't want to use it.
Reader Andrew sends in a little tip regarding the Google Play Newsstand app, and how it has the same sort of hidden developer settings as Android itself these days. Go into the settings menu, scroll down to the build number, and tap your little head off until you're granted developer options.
You'll then be able to disable caching. But as the toast notification clearly spells out, it's not really an option you'll want or need to use. Explains the app:
Disable caching is for testing design changes and makes the app operate very slowly. This operation will be automatically turned off in 4 hours.
Your battery and data cap will thank you.