updated 04:41 pm EDT, Thu May 15, 2014
Opens up range of new giveaways
App Store developers can now assign promo codes for in-app purchases, not just the apps themselves, according to anecdotes. An active example is Real Racing 3, for which EA is giving away 10 in-game gold pieces that would normally cost $2. For people who don't already have the game installed, entering the promo code will start downloading it automatically.
The change should open up content giveaways for a range of different apps, not just games. It's particularly important for reviewers, who may not be able to properly test an app without free access to all features.