Aws\Account- This release enables customers to manage the primary contact information for their AWS accounts. For more information, see https://docs.aws.amazon.com/accounts/latest/reference/API_Operations.htmlAws\EC2- Added support for EC2 M1 Mac instances. For more information, please visit aws.amazon.com/mac.Aws\IoTDeviceAdvisor- Added new service feature (Early access only) - Long Duration Test, where customers can test the IoT device to observe how it behaves when the device is in operation for longer period.Aws\MediaLive- Link devices now support remote rebooting. Link devices now support maintenance windows. Maintenance windows allow a Link device to install software updates without stopping the MediaLive channel. The channel will experience a brief loss of input from the device while updates are installed.Aws\RDS- This release adds the "ModifyActivityStream" API with support for audit policy state locking and unlocking.Aws\TranscribeService- Remove unsupported language codes for StartTranscriptionJob and update VocabularyFileUri for UpdateMedicalVocabulary