I very much doubt it. It doesn't run Windows stuff, so it's more of a competitor to Chromebooks, and those haven't sold like wild (less than 5% of new sales in 2016). Coupled with the fact that it restricts you in the choice of phone, and I think it's basically DOA.
I figure that’s a good opening for accessory sales (from a product design perspective). It wouldn’t have to lock you into a phone if the connector was universal (ie, the switch to USB C) and adapters to fit snugly into the slot—they could even be cases. Also has the advantage of modularizing the machine.
And most phones swing above chromebooks for price and power, no? This would be an improvement on the format if you ask me. Especially if it could eventually deliver a proper Linux distro or Mac OS.
Is it just me or would something like that sell like wild?