the existence of the S1 and S2, giving the distinctive Android devices a broad global release time frame of this fall. And now we've been shown a private note sent from Sony's marketing group, highlighting an August pre-order and an end of September release date for an unnamed tablet from the company, a timeline that's right in line with our initial report on the S1. The device, according to the note, will be available through Sony Direct, UK department store John Lewis, and a third still-unconfirmed retailer at launch. Availability will apparently open up after the Christmas holiday. The note doesn't offer up much info on the tablet, though it does promise that it stacks up well against the iPad and offers up some "unique design features," which may well refer to the S2's clamshell -- or, for that matter, the S1's curved back.