Now, I would normally speculate about the gadget but I'm not sure what it is. The screen shape is rather odd for a tablet or ebook reader; the (screen) corners are far too rounded for most screens that I know of. No large screen tablet has corners that rounded. You can sometimes see that on small devices but not often.
Note that I'm talking about the inside corners, not the shell.
Wistron is calling it an "eReader Tablet", and it was test for Wifi(n). We also know that it has a microSD card slot and the model number is K080.
It's my guess that this is a device that Kobo worked on and then decided not to release. I suspect that Wistron sent it through the FCC becuase they have a business partner that is interested.
Update: I've gotten a hint that Kobo will release this tablet. Whoops. Also, this is now a 7" tablet.
We'll know more in early November; that's when the embargo lifts.