Amazon announces not 1, not 2 but 5 new and/or improved Kindle devices-- the Kindle Fire HD (in either 8.9- or 7-inch varieties), a Kindle Fire upgrade, the Kindle Paperwhite and a next-generation Kindle eReader.
Clearly Amazon is taking the threat of both Google (with the Nexus 7) and Apple (possibly, at least) when it comes to the 7-inch tablet segment very seriously, while still not ignoring the general eReader market too much.
The (literally!) biggest news is the Kindle Fire HD-- with HD displays, dual-core TI OMAP 4470 processor, more RAM and MIMO (meaning dual antennas) technology Amazon claims provides "40% faster" wifi than the iPad.
The flagship model has an 8.9-inch 1920x1200 display and 32GB of storage, while the smaller 7-inch model handles resolutions of up to 1280x800 and 16GB of storage. Both models also carry Dolby Audio technology with dual-driver stereo speakers.