Apple this morning announced that it will launch the third-generation iPad in China on July 20. Both Wi-Fi and Wi-Fi +Cellular models will be available through the Apple Online Store, from select Apple Authorized Resellers, and by reservation from Apple retail stores. According to the company, reservation requests will be accepted daily from 9 a.m. to 12 p.m. beginning Thursday, July 19 for pick up the following day. As with the device’s launch…