I've just found some FCC paperwork filed by Netronix this morning. All the more interesting details are embargoed until November, but it looks like TeamUC, the company that imported the 6.8" Mobiscribe ereader earlier this year, could soon be offering a new model, possibly with a 10.3" screen.
The device in question was tested for Wifi and Bluetooth, and is described as a digital notepad.The test reports referenced a microSD card slot, but I didn't find any mention of a headphone jack, a stylus, etc.
It measures 9.8" by 7.1", which is interesting because the ereaders on the TeamUC website are a 13.3" model and the 6.8" model that shipped earlier this year. Those devices are either larger or smaller than the one in the FCC paperwork, so this device probably has a screen size somewhere in between the two.
I have contacted TeamUC to ask for more info, but this is all I can tell you right now.