Amazon ECS Agent - Release 1.3.1 - 2015-08-04

• Feature - Add debug handler for SIGUSR1.
• Enhancement - Trim untrusted cert from CA bundle.
• Enhancement - Add retries to EC2 Metadata fetches.
• Enhancement - Logging improvements.
• Bug - Resolved an issue with ACS heartbeats.
• Bug - Fixed memory leak in ACS payload handler.
• Bug - Fixed multiple deadlocks.

Amazon ECS Agent - Release 1.3.0 - 2015-07-07

• Feature - Add support for re-registering a Container Instance.

Amazon ECS Agent - Release 1.2.1 - 2015-06-19

• Security issue - Avoid logging configured AuthData at the debug level on startup
• Feature - Add configuration option for reserving memory from the ECS Agent

Amazon ECS Agent - Release 1.2.0 - 2015-06-11

• Feature - UDP support for port bindings.
• Feature - Set labels on launched containers with task-arn, container-name, task-definition-family, and task-definition-revision.
• Enhancement - Logging improvements.
• Bug - Improved the behavior when CPU shares in a Container Definition are set to 0.
• Bug - Fixed an issue where BindIP could be reported incorrectly.
• Bug - Resolved an issue computing API endpoint when region is provided.
• Bug - Fixed an issue where not specifiying a tag would pull all image tags.
• Bug - Resolved an issue where some logs would not flush on exit.
• Bug - Resolved an issue where some instance identity documents would fail to parse.

Amazon ECS Agent - Release 1.1.0 - 2015-05-08

• Feature - Logs rotate hourly and log file names are suffixed with timestamp.
• Enhancement - Improve error messages for containers (visible as 'reason' in
  describe calls).
• Enhancement - Be more permissive in configuration regarding whitespace.
• Enhancement - Docker 1.6 support.
• Bug - Resolve an issue where data-volume containers could result in containers
  stuck in PENDING.
• Bug - Fixed an issue where unknown images resulted in containers stuck in
  PENDING.
• Bug - Correctly sequence task changes to avoid resource contention. For
  example, stopping and starting a container using a host port should work
  reliably now.

Amazon ECS Agent - Release 1.0.0 - 2015-04-08

• Feature - Added the ability to update via ACS when running under
  amazon-ecs-init.
• Feature - Added version information (available via the version flag or the
  introspection API).
• Enhancement - Clarified reporting of task state in introspection API.
• Bug - Fix a lock scoping issue that could cause an invalid checkpoint file
  to be written.
• Bug - Correctly recognize various fatal messages from ACS to error out more
  cleanly.

Amazon ECS Agent - Release 0.0.3 - 2015-02-19

• Feature - Volume support for 'host' and 'empty' volumes.
• Feature - Support for specifying 'VolumesFrom' other containers within a task.
• Feature - Checkpoint state, including ContainerInstance and running tasks, to
  disk so that agent restarts do not leave dangling containers.
• Feature - Add a "/tasks" endpoint to the introspection API.
• Feature - Add basic support for DockerAuth.
• Feature - Remove stopped ECS containers after a few hours.
• Feature - Send a "reason" string for some of the errors that might occur while
  running a container.
• Bug - Resolve several issues where a container would remain stuck in PENDING.
• Bug - Correctly set 'EntryPoint' for containers when configured.
• Bug - Fix an issue where exit codes would not be sent properly.
• Bug - Fix an issue where containers with multiple ports EXPOSEd, but not
  all forwarded, would not start.