Apple will hold its new iPad event on Oct. 22, AllThingsD reports. The event will feature “the latest updates to the company’s iPad line” — the report mentions the fifth-generation iPad and second-generation iPad mini — as well as Mac Pro and OS X Mavericks. AllThingsD states that the iPad mini will indeed receive a Retina display and A7 chip, while the full-sized iPad will be redesigned with an A7 chip and improved camera. The…