Amazon.com, Inc. (NASDAQ:AMZN) has gotten a lot of negative press recently for its high profile fight with Hachette over the price of the publishing house’s e-books and how much of a cut Amazon gets to keep, but it is pressing ahead with new pricing models nonetheless. Today Amazon officially announced Kindle Unlimited, a previously leaked subscription service that lets customers download as many books as they want for $9.99 a month. Catalogue of 600,000 books available on Kindle Unlimited Of course not everything in the Amazon.com, Inc. (NASDAQ:AMZN) catalogue is available in Kindle Unlimited, but Brian Fung at the Washington…