Amazon Kindle Fire HD

Amazon has officially announced  three new Kindle Fire HDs at a press event today in Santa Monica, Calif., (in addition to an updated version of the Kindle Fire, sans HD). There's the Fire HD with the 7-inch screen that will sell for $199, and a Fire HD with a 8.8mm thick version with an 8.9-inch screen and a $299 price tag. There's also an extra-fancy Fire HD with AT&T's 4G LTE support for $499.
All the Fire HD devices boast an IPS display, and the non-4G versions both harbor 16GB of on-board memory.

Screen
The smaller, 7-inch Kindle Fire HD has a 1,280x800-pixel screen resolution, and the two 8.9-inch versions have a 1,920x1,200-pixel HD resolution (254ppi).The displays features the Advanced True Wide polarizing filter and a fused (laminated) touch sensor that Amazon says will reduce glare by 25 percent while maintaining rich color and contrast from the gamut of viewing angles.

Hardware 
The 8.9-inch models of the Kindle Fire HD  will run on an Texas Instruments OMAP 4470 processor that Amazon claims is much faster than Nvidia's Tegra 3 quad-core chipset.
There's a front-facing HD camera, and Dolby Digital Plus that will pump music on two speakers.

Connectivity
The tablets will feature better Wi-Fi than before, thanks to dual antennas and dual band 2.4GHz and 5GHz band support. Amazon claims that MIMO will purportedly give the Fire HD 40 percent faster Wi-Fi downloads and streaming than the iPad.

Whispersync
Whispersync for Voice will allow users to keep their place in audio books across devices, while Whispersync for Games will additionally store your accumulated points in the cloud.

Accounts and controls
The Kindle Fire HD's most exciting additions is Kindle FreeTime, which has settings that let you to set time limits for games, TV, and movies.

Software extras
The Kindle Fire HD starts off with new e-mail app emphasizing corporate e-mail, and a custom Facebook app for stoking social connections.
X-Ray for movies is a new one that will fetch info on actors while you watch a movie.. Amazon has also implemented X-Ray for reading as well.
There's also "Immersion Reading," which will highlight words in a book as it's read to you.

The 7-inch Kindle Fire HD will ship September 14, for $199, and both the 8.9-inch and LTE models will ship November 20, for $299 and $499, respectively.