AWS has S3 Transfer Acceleration feature (see https://aws.amazon.com/blogs/aws/aws-storage-update-amazon-s3-transfer-acceleration-larger-snowballs-in-more-regions/ )
The use of this feature requires that the S3 endpoint is changed from *.s3.amazonaws.com to *.s3-accelerate.amazonaws.com
AWS Java SDK also provides the ability to turn on Transfer Acceleration (see: http://docs.aws.amazon.com/AmazonS3/latest/dev/transfer-acceleration-examples.html )
It would be nice to have a checkbox in S3 Plugin options to enable the use of Transfer Acceleration. It would be sufficient for upload to fail if Transfer Acceleration isn't actually enabled on the destination bucket.