Here's a tablet
set to debut in December that looks very interesting and may be a game changer --
"Sharp Aquos Pad SHT21 is a 7 inches Android tablet boosted with a battery life of up to two and half time better than the regular tablet. Using the display made up of Indium Gallium Zinc Oxide achieves a battery life of 24 hours of continuous operation as that of 10 hours in the normal tablets. The 24 hours battery backup is obtained with a 3460 mAh battery which can be rechargeable. And it could easily provide a standby time of a week. The 7 inches screen provides a maximum resolution of 1280 x 800 pixels and itís powered with dual core MSM8960 Snapdragon S4 processor clocked at 1.5 Ghz frequency and includes 1 GB of RAM. The device is on the lighter side as it has less weight in battery and weighs 280 grams along with measuring 9.4 mm thickness."
Full specs in the link, but it weighs just 280 grams and promises to have extremely long battery life. It will be the king of the 7-8" tablets in terms of both weight and battery life if what's being reported is accurate.
Unfortunately, it appears it may not be sold outside of Japan. But if it's successful, there will probably be similar models using the same screen technology in the very near future.