[
  {
    "category": "``opsworks``", 
    "description": "Update opsworks command to latest version", 
    "type": "feature"
  }, 
  {
    "category": "``rds``", 
    "description": "Update rds command to latest version", 
    "type": "feature"
  }, 
  {
    "category": "``s3``", 
    "description": "Add a new ``aws s3 presign`` command, closes `#462 <https://github.com/aws/aws-cli/issues/462>`__", 
    "type": "feature"
  }
]