facebook notice: October 2013 Breaking Changes

notice today on my facebook developer account (screenshot attached):
October 2013 Breaking Changes
7 hours ago
Your app, WPMUDEV has not enabled the migration for the October 2013 Breaking Changes.
Once you have confirmed your app is compliant or unaffected by the October 2013 Breaking Changes, set the migration setting to "Enabled" in the Advanced section of the App Dashboard. This will apply the October 2013 Breaking Changes to your app and prevent you from receiving future alerts about these changes.
WPMUDEV, might be affected by the following changes:
POST_ID/likes format will change. Apps will be able to retrieve all likes on a post (rather than the first 4 as it is today) through paging. As a result of the functionality update, the like count will be moved to the summary field.
These changes will be permanently enabled for all apps in 45 days on Friday, October 4, 2013.

what am i supposed to do with this?