Amazon has announced the Fire HD 8 tablet: SEATTLE--(BUSINESS WIRE)--Sep. 8, 2016-- (NASDAQ: AMZN)--Amazon today announced the all-new Fire HD 8, the next-generation Fire HD tablet designed from the ground up for all-day entertainment. With an 8" widescreen HD display and quad-core processor, Fire HD 8 now offers an incredible 12 hours of battery life,