High Dynamic Range is actually a technology that is more commonly used in dealing with modern televisions as opposed to movie screens, but the idea of producing content capable of showing brighter whites as well as darker blacks can certainly be used to great effect in a movie theater as well.
However, the most difficult innovation that Indiewire says James Cameron is looking toward is the idea of doing a 3D movie without the need for glasses.
High frame rate films have been made in the past.
Peter Jackson’s The Hobbit, as well as Ang Lee’s upcoming Billy Lynn’s Long Halftime Walk both utilized high frame rates in their production.