Could it be a phone, a netbook or even an ereader/tablet like the Microsoft Courier? The above patent has surfaced via HTC, showing both screens working as one, or split so one is a virtual keyboard, the other, the UI.
It's certainly an intriguing idea, particularly if it were to run Android. We've already seen how well Android works in a dualbook with the enTourage eDGe, which had one side as an ereader and the other as a tablet. Personally I'm really feeling HTC's designs of the past year - being a longtime user of their phones since the TyTN, stuff like this patent makes me feel extra-proud I threw my weight behind them early on. [Zol via GadgetMix via TechRadar]