For all you iPhone and iPad devs out there, the iPhone Developer Portal has just been updated with the iOS GM seed, alongside the GM seed of the iOS 4 SDK. Remember, iPhone OS has been renamed iOS, for anyone who is confused. The software build is 8A293, while the SDK build is 10M2262. Apple announced earlier today at WWDC that iOS 4 will officially launch on June 21, available as a free upgrade for iPhone 3G, iPhone 3GS, and iPod touch users—and that’s the first time that a major update to iOS has been made available for free to the iPod touch! The iPhone 4 launches three days later.