Apple opens the doors of iPhone OS 4

Apple has officially opened its submissions process for apps that use the features of its new iOS 4 software.

Developers have been emailed, reports TechCrunch, inviting them to submit their updates or new apps now, to ensure they’re available on the App Store when the software goes live for iPhone and iPod touch owners.

CEO Steve Jobs announced during his WWDC keynote this week that the software will be made available on 21 June as a free upgrade for all users.

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