Not to be left out of the tablet fray, Barnes & Noble launched two successors to the original Nook Tablet this morning, the Nook HD and the Nook HD+.

As the name would imply, both the Nook HD and the HD+ have impressively high resolution displays. The 7-inch Nook HD has a resolution of 1440 x 900, which is sharper than both Google's Nexus 7 and the 7-inch Kindle Fire HD. The Nook HD+ is a little larger at 9-inches and boasts an impressive 1920 x 1280 display.

In addition to the nice displays, both tablets are also the lightest in their class, weighing in at just 11.1 oz and 18.2 oz, respectively.

Design wise, the smaller Nook HD is the sleaker of the two, with a new, smoothly rounded form factor. It's available in either soft white or slate black. The Nook HD+ looks more like a larger version of the Nook Tablet, with a familiar accented lower-left corner complete with keyhole. It's only available in black.

Inside, both the HD and HD+ are running a dual-core TI OMAP 4470 processor clocked at 1.3 ghz and 1.5 ghz, respectively. Software wise, we're looking at a very highly customized version of Android 4.0, with a slick interface and a new feature that lets you log in to different personalized profiles. Barnes & Noble is touting this as great for sharing within a family.

The Nook HD is $199 for an 8GB model and $229 for 16GB. The Nook HD+ Starts at $269 for 16GB and goes to $299 for 32GB.

Both devices are available for pre-order now and will ship in late October.

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