Following rumors earlier this week, Amazon has just announced its new Kindle Unlimited subscription service. Pay $10 a month, and you can read as much as you want (from a pool of 600,000 books, at least).

The service isn't just limited to e-books, either: you can also take your pick from over 8,000 of audio books, too. But while it all sounds too good to be true that's because... well, it may be. Many of the major publishers—Penguin Random House, Simon & Schuster, HarperCollins, Macmillan, and Hachette included—aren't fully represented, so your choices aren't perhaps as wide as you'd hope.

You will find popular titles like Harry Potter, Lord of the Rings and the Hunger Games—as you will if you're a Prime member using the Lending Library. A first inspection suggests that the catalog of books is larger than the Lending Library, though, and there are Kindle exclusives, too. If you sign up, you just need to look out for the Kindle Unlimited logo on eligible titles, then click "Read for Free."

Like Prime, Amazon is offering a free 30-day trial to tempt you, and also throwing in a three-month subscription to Audible, too. Worth trying, then, even if you don't continue to use it. Go check it out. [Amazon]