Apple has announced that it will release iOS 4.2 for the iPad, iPhone, and iPod touch later today. Announced during Apple’s September media event, the update will bring previously iPhone- and iPod touch-exclusive features like multitasking and a unified Mail inbox to the iPad, and will also add new features like AirPlay streaming and AirPrint wireless printing to all three devices. Apple is expected to release iOS 4.2 around 1:00 p.m. Eastern…
