While members of the Amazon Prime club get all kinds of benefits with their subscription, bookworms don't receive a great deal of special treatment. Sure, they can borrow one e-book for free each month and access new novels early, but the all-you-can-read Kindle Unlimited service requires a separate, $10 per month subscription of its own. That isn't changing today, but Amazon has just announced something of a light version of Unlimited called Prime Reading, which is now available to Prime subscribers in the US.