Moreover, the filing hints at 21Mbps HSPA+ chip, which only makes sakes, since Sony said in April they will be 3G/4G, and also a removable battery is listed, of the 3080mAh capacity.
Until recently Sony were taking their sweet time to bring gadgets to market, but nothing speeds you up like a few bad quarters, so let's hope this tablet sees the light of day sooner rather than later.
Sony S2 dual-screen tablet FCC filing
From what is known about the Sony S2, it sports a clamshell design which very much reminds us of a high-tech reading glasses case. Inside are two 5.5" displays with 1024x480 pixels a piece, and the whole thing will be running Android Honeycomb, powered by NVIDIA Tegra 2. Sony's interface overlay and apps have been optimized for the dual-screen setup, like the email client, which allows you to type on one of the displays, while previewing the email body on another, and so on.
Sony is also preparing a sort of cloud service for its Android tablets, as PlayStation Certified gear, with apps, syncing and storage tailored for them, so they don't feel left out in the cold. The company already secured its own little corner of Android Market recently for its phones, and is evidently planning on taking things to the next level for the upcoming slates as well.