Categories Hardware Rumor Software Rumor: Mac OS X 10.7.3 beta references hint at upgraded Mac Pro units, improved video cards Post author By Chris Barylick Post date December 5, 2011 It’s the beta references that provide the best hints. Per Tags 10.7.3, 2010, 7900, AMD, ATI, beta, card, July, Mac, OS X, Pro, references, Tahiti, video