All Release Notes and notifications of product updates are posted in the Client Console prior to release.  You will be notified if changes have been made with presence of a large, rotating "NEW" graphic on the left side of the screen - right below your account settings link.

If you ever see the rotating NEW image, make sure to click the Message Inbox link to read the Release Notes.  All details, including step-by-step instructions will be posted for you to read in an easy-to-follow manner.