According to the latest report, the so-called iWatch wont be limited to a suite of Apple-designed apps. A very select group of third-party developers, including Facebook, have been given early access to the software development kit (SDK) for the device, reports 9to5Macs Mark Gurman. More importantly, the rumor suggests that Apple will open up its wearable device to third-party developers, and may even bring a version of its App Store to the device.