Version 1.5.11.0 of the AWS .NET SDK
This release adds support for Amazon S3 Website redirection rules, Amazon ElastiCache VPC support, Amazon RDS DB instance renaming,  and IAM role support in Amazon Elastic MapReduce. It also contains Amazon RDS changes which migrate DB security groups to  VPC security groups.
Version 1.5.12.0 of the AWS .NET SDK
This release adds support for Amazon Elastic Transcoder.