Amazon announces the Kindle Fire HD28
Backing up that screen will be a Texas Instruments OMAP 4470 processor, which Amazon says compares favorably to Tegra 3 powered devices (a reference to the Nexus 7 we imagine). Sound hasn't been neglected either, as they are employing Dolby Digital Plus, which is currently an exclusive to the Fire HD.
Of course with great HD content comes great HD responsibility - Jeff Bezos (Amazon's CEO) is emphasizing the importance of storage and Wi-Fi performance to digital content. Poking fun at the entry-level cloud-based Nexus 7, Bezos claims that an 8GB tablet made for HD content is "dead on arrival". The Kindle Fire starts at 16 GB, although that won't hold a ton of HD movies either we suspect. Perhaps more important to the end user are the connectivity features packed in; The Kindle Fire HD comes with dual Wi-Fi antennas and MEMO, a computational system to improve Wi-Fi signals in cities or other areas that see lots of reflections. MEMO actually calculates out the reflections from the main signal and then adds them back in to replace gaps in the data stream. Amazon says the Fire HD is the first tablet to incorporate MEMO processing. And if that's too slow you can grab the 4G LTE model.