Amazon had set a target of late May for their Facebook-friendly Kindle 2.5 update, and it looks as though they're on schedule. Reports from users have started trickling in—at least for Kindle DX—meaning that the broad OTA release has begun.

Things to look out for in your shiny new firmware: Facebook, Twitter, password protection, PDF pan and zoom, and improved organization and sharing tools. So get ready, world! For a lot of tweets and status updates about minor plot points in books you don't care about. [Engadget]