The world's thinnest and lightest 10" Android tablet official in Japan - Toshiba REGZA AT700
iPod touch slimness, which is a remarkable achievement, considering that the slate is crafted out of single sheet of aluminum, not plastic, for added rigidity. Besides the beautifully crafted body, the REGZA AT700 sports a 10.1" 1280x800 pixels LCD display, 1.2GHz dual-core TI OMAP4430 with 1GB of RAM, 5MP rear and 2MP front cam, and 32GB of internal memory. MicroUSB, microSD and HDMI are standard. The anorexic slate was introduced at the CEATEC expo in Japan, and will be available for sale there by year-end, hopefully the AT200 for Europe and, eventually, US, will stick to the same timeframe.
A 7-incher was also announced, the Toshiba REGZA AT3S0 (boy, these names Japanese-bound titles are uninspiring), which is pretty light at 13 ounces (379 grams), but the thickness is considerable at 0.48" (12.1mm). In fact, it suspiciously reminds us of the Toshiba Thrive 7 tablet, and is probably just its Japanese edition, ready to go on sale at the end of this month.
source: Toshiba (translated)