While we're sure the iPad Pro will arrive one day, when that day will come is looking less and less clear.
Apple is stalling production of the larger iPad until sometime in September. The 12.9-inch tablet was originally slated to begin rolling off the assembly line this quarter, but delays in the display panel supply chain forced a change of plans.
Starting production now would have presumably set Apple up nicely for its usual end-of-year iPad release push, but beginning production in September calls into question whether Cupertino can pull off a 2015 release. Even if the tablet did make it out before 2016, inventory may be a serious issue if the tablet proves popular.
iPad sales have sagged in recent quarters, and the introduction of larger iPhone's with the iPhone 6 and iPhone 6 Plus aren't helping the tablet's chances. The iPad Pro is likely going to be aimed at business users and will give its tablet arm the jolt it needs to catch up with the iPhone. Or at least, Apple hopes it will.