Two new Kindle models are expected to be available on Amazon.com in time for the holiday shipping season, with the first coming as early as October. The first model will be an update of the current e-book reader, with the same screen size and an improved interface, according to the tipster. The second new model will be considerably larger, shaped like an 8.5-inch by 11-inch piece of paper, and is expected to be available next year. The Kindle connects to the Web to download books to a PC to load a book.