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Asus isn't the only tablet maker working on a quad-core Android tablet -- Lenovo appears to have one in the works as well.
Engadget has gotten its hands on what appear to be "leaked" photographs of a 10.1-inch tablet Lenovo is allegedly planning to release by the end of the year. Like Asus's next-generation Transformer Prime device, the tablet is powered by NVIDIA's Tegra 3 T33 processor and Android 4.0 (Ice Cream Sandwich). It also sports a back-facing camera, 2GB of 1.6GHz of RAM and a "fingerprint scanner" that also functions as an optical joystick on the backside. (If you're wondering what an optical joystick is, read this.)