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Mac App Store Adds In-App Purchases, Push Notification And Delta Updates

The apps in the Mac App Store are set to receive some solid enhancements including push notifications, sandboxing and delta updates.

For enhanced security, apps will have a built-in sandbox mode whilst developers will have the ability to send "delta updates", which are effectively 'patch based' updates, meaning the entire app will not have to re-downloaded with every update.Apps will also be able to send push notifications to users and just like iOS apps, can also have in-app purchases.

Phil Schiller also touted that the Mac App Store has become the number one retailer for PC software, overtaking even Best Buy.