I've been saying quad-core but it will be the A8X. iPad Air and mini will have standard, slower dual core A series, Pro will get the X in the quad core. Plus it will need a higher end graphics processor to run a 12 retina screen. I think it will also be closer to 12" than 12.9", and have a reduced bezel. 4GB ram, AC wireless, USB port with basic peripheral support, expanded iOS 8 features like a more fleshed out system of organizing and retrieving files so you can actually do work between apps. Maybe a pressure sensitive digitizer if we're lucky.
Where this report is likely wrong is a focus on enterprise. When has Apple really focused on enterprise? This will be more geared towards creative professionals. Photographers, artists, designers, muscians, and simple enthusiasts who want something really powerful and have money. Heck, I wouldn't be surprised to see one of these things running Xcode in a few years. It's the natural progression of these things. Let me explain:
Apple had this patent for an iMac looking device. You put your hands on the sides of the screen and grab it. It senses your heart beat and that you're grabbing it and slides down into a low profile mode that is at a similar angle to the iPad in a Smart Cover being used to type. As you pull it down into this low angle position, OS X transitions into a touch friendly version. This will be your main hub. The iPad Pro will use this alternate OS X interfacewhich is essentially iOS 8 but with some advanced features, and be your away from desk creative tool. This allows you to get some work done when out and about. It stays in sync with what you're doing on your desktop, so it's effortless to grab it and head out the door. I'm not sure if they can nail it out of the park as I've described in v1.0, but that's how I envision my workflow in the next 3-5 years. For now I would just be happy to have a more powerful device that lets me edit RAW photos in Lightroom Touchand hopefully ship with software that allows the display to be calibrated.