Will this be Apple's answer to MS Surface?
I'm curious whether this will be some kind of response to the MS Surface Pro.
A few guys where I work have the got the Surface Pro, and it's an interesting idea, although I don't feel it's quite what I'm looking for in a device. For a start the screen is just too small for a 1920x1080. It's quite sharp, but way too small for extended use via the Windows 8 desktop. Yes, you can connect to an external via miniDP, and in my opinion this would be necessary to avoid eye strain.
It isn't great as a tablet because of its weight, but would be OK on a table, using fingers or stylus.
The fact that it's runs an Intel i5 and has up to 512GB SSD makes it interesting as super portable, and the detachable keyboard gives it some flexibility that a laptop doesn't have (e.g. on an airplane table, as a discrete notepad in meetings etc.).
This new device could be Apple's version of the Surface, but done right. However, I'm not sure we'll see a detachable keyboard and I still see a big problem with using a touch screen with Mac OS X, and I don't think we're ready for an iOS / MacOS hybrid or a converged OS just yet.
It could be a sort of iPad pro with a keyboard, but who would want this just for iOS apps?
I think it's more likely to be an evolution of the MBA, i.e. a super small & light laptop that combines a great screen with portability and reasonable computing power.