It's been a busy week for the Kindle Fire. First came news that Amazon would be bringing Facebook,Hulu and "several thousand" other apps to its forthcoming tablet, and now, we've got confirmation that hundreds of magazines and newspapers are on their way, as well. Yesterday, the company announced that more than 400 "full-color" titles will be available on the Kindle Fire Newsstand, including Us Weekly, The New Yorker and Reader's Digest, among others. Users who subscriber before March 1st, meanwhile, will be able to access a full 17 Condé Nast titles for free, as part of a three-month offer. Amazon is also promising plenty of interactive editions with built-in video and audio, which you'll be able to check out for yourself next week, when the Fire begins shipping. For more details, check out the full press release after the break.