Amazon has unveiled the third generation of Kindle Wednesday. Company CEO Jeff Bezos revealed a total of three new Kindles: the 8.9-inch Kindle Fire HDX, the 7-inch Kindle Fire HDX and the new Kindle Fire HD.

The 8.9-inch Kindle Fire HDX sports a 2560 by 1600 resolution screen with 339 pixels per inch. The tablet is powered by a Quad Core 2.2 GHz processor and has a battery life of 18 hours when used for reading - dwindling down to 12 hours for mixed use. It has a front facing HD camera and an 8-megapixel rear facing camera.

The 8.9-incher measures at a slim 9.1 inches by 6.2 inches by 0.31 inches and weighs roughly 374 grams. It is available in 16GB for $379, 32GB for $429 and 64GB for $479. Shipping starts on December 10 for the 8.9-inch Kindle Fire HDX, though pre-orders are already accepted.

The smaller version of the tablet has a 1920 by 1200 resolution screen with 323 pixels per inch. Like its larger counterpart, it is powered by a Quad Core 2.2 GHz processor. The 7-inch tablet will last users around 17 hours when used for reading and some 11 hours for mixed use. Unlike the 8.9-inch Kindle Fire HDX, the 7-inch only has a front facing camera.

Measurements for the 7-incher come at 7.3 inches by 5 inches by 0.35 inches, weighing in at about 303 grams. Like the 8.9-inch model, this tablet will also be available in 16GB, 32GB and 64GB with price tags of $229, $269 and $309 respectively. Pre-orders for the 7-inch Kindle Fire HDX are already accepted but shipping won't be until November 14.

The new and improved Kindle Fire HD will also be available for $139 for the 8GB model and $169 for the 16GB model. It has a Dual Core 1.5 GHz processor, a 261 pixels per inch 1280 by 800 resolution screen. Users of the 7-inch Kindle Fire HD will be able to enjoy the tablet for up to 10 hours of mixed use. The tablet will start shipping by October 2 and is now available for pre-order.

Amazon's new Kindle Fire tablets now run on their very own OS named Fire OS 3.0 with a codename of "Mojito."

The new tablets will also feature the much talked about "Mayday" tech support. Users of the tablet who are having issues or are in need of tutorials can simply press the "Mayday" button. Within 15 seconds, a tech support representative will pop up on the screen, providing live support to Kindle users.

Tech support representatives are able to view the tablet screen and can also hear the user's voice. However, they are not able to see the user. They can guide you through drawing and pointing onto your tablet screen and can even navigate your tablet on their own with your permission.

The "Mayday" support is available 24/7, 7 days a week for free.