Following up on last evening's rumor, Apple has pulled the trigger and made its acquisition of mobile ad network Quattro Wireless official. A sale price wasn't disclosed -- $275 million is the popular number being thrown around -- but the company's CEO Andy Miller has been immediately elevated to Apple's newly-minted VP of Mobile Advertising position. In a news post on Quattro's site, Miller says that its products and services won't change "for now" -- but considering that it offers tailored advertising across a huge bounty of devices and platforms, we have to imagine Apple's long-term strategy is going to involve making this framework more of an App Store value-add f