Amazon officially announced and made live its Kindle Unlimited subscription program, which was previewed earlier this week and which we have written about extensively already. Notably, the announcement does not specify which publishers have opted in by specific agreement (as opposed to having Amazon include some of their books without direct consent; we already reported on the example of Scholastic’s Hunger Games series). Like competing services, Amazon is offering a 30-day trial period (which will likely be a more expensive promotion for Amazon than their smaller competitors. A KU subscription also includes up to three free months of an Audible subscription. Participants […]