The Twilio Notify API has announced a change in the default APNS message format for iOS devices via APNS, starting from October 30th, 2017. The new format allows developers to take advantage of the title attribute, making it easier to use Notify for web push targeting Safari browsers on OS X. The old format will continue to be used for services created before October 30th. Developers can choose to keep using the old format or migrate to the new one, which requires changes in the `aps.alert` attribute from a string to an object with a title attribute.