Sony S2, Sony's dual-screen Android tablet which is due out this week, has hit the FCC. The FCC listing doesn't provide a lot of new information other than the fact that the tablet supports WiFi 802.11b/g/n, Bluetooth and AT&T's 3G mobile broadband connectivity. The Sony S2 tablet will also support 21Mbps HSPA + wirelss networks. It looks like the tablet has a user-removable battery.The Sony S2