Check it out here: http://itunes.apple....388424049?mt=8#
or search for Avenza or PDF Maps in iTunes.
The app is free and will enable geospatial PDF maps AND even GeoPDF formatted ones to be used with the GPS and locational abilities of iPads, iPhones and iPod Touches. There are lots of other features too so have a look and try it out.
The full press release will follow later this week but I figured some anxious folks may want to have an early look.