In addition to announcing a couple new ereaders yesterday, Onyx recently also filed FCC paperwork for three additional ereaders. All three are updates for existing models, but have not been formally announced.
Onyx has not embargoed any of the interesting details, but I cannot tell you anything at the moment because the FCC website isn’t cooperating. It took the longest time to download just the one set of external photos, and I do not have more time to spend on this.
What I do know is that the existing Poke 2, Nova 2, and Note 2 models run Android 9,0 and have 6″, 7.8″, and 10.3″ screens. It is reasonable to assume that the new models will have the same size screens and run Android 10.