We’ve been seeing references to HiDPI display modes in OS X Lion and iOS iPad for a while now, which has helped cement rumors that Apple will release a Retina Display MacBook Pro, at least, in 2012.

As such, today’s report that Apple left a big reference to HiDPI mode intact in developer builds of OS X 10.7.3 isn’t a big surprise. The functionality can be seen in Finder’s “Get Info” window, and allows you to open a file or app in HiDPI mode, which (while non-functional right now) would presumably user higher-definition fonts, graphics and other UI elements. Retina Display Macs seem like a shoe-in in 2012 at this point, don’t you think? Maybe only MacBook Pro or all the Mac family, and the iPad 3 could get it such as the iPod Touch 4th Gen, iPhone 4 and 4S have so the newest iOS device with Retina display could be the 2012 iPad.