We've known for a while that NVIDIA is working with Lenovo (and ASUS) on a Windows RT Tablet, but ABC News believes that we might already have seen the mystery device in action. Its sources have let slip that alongside the Intel-powered IdeaPad Yoga laptop / tablet hybrid (LapLet? TabTop?), the company will release a Tegra-powered version running Windows RT, combining the same sexy hardware with ARM's power-sipping technology. If true, then we might have a very tough purchasing decision on our hands when the gear arrives -- with the launch date still expected to be on October 26th.