Microsoft’s Windows 8-powered surface tablet may be nabbing all the headlines (at least partially because some of Microsoft’s myriad hardware partners were miffed by the company’s decision to make it in the first place), but a newly-revealed convertible device from Sony seems like it may be able to give the Surface a run for its money.PocketNowmanaged to score some images of the forthcoming Sony VAIO Duo 11, a Windows 8 tablet with an awfully familiar-looking gimmick — the (reportedly 11-inch) touchscreen slides up and latches into place, revealing a full-size, back-lit keyboard.