Amazon ECS Agent - Release 1.7.1 - 2016-01-13

• Enhancement - Increase docker inspect timeout to improve reliability under
  some workloads.
• Enhancement - Increase connect timeout for websockets to improve reliability
  under some workloads.
• Bug - Fixed memory leak in telemetry ticker loop.

Amazon ECS Agent - Release 1.7.0 - 2015-12-14

• Feature - Add support for pulling from Amazon EC2 Container Registry.
• Bug - Resolved an issue where containers could be incorrectly assumed stopped when an OOM event was emitted by Docker.
• Bug - Fixed an issue where a crash could cause recently-created containers to become untracked.

Amazon ECS Agent - Release 1.6.0 - 2015-10-28

• Feature - Add experimental HTTP proxy support.
• Enhancement - No longer erroneously store an archive of all logs in the container, greatly decreasing memory and CPU usage when rotating at the hour.
• Enhancement - Increase docker create timeout to improve reliability under some workloads.
• Bug - Resolved an issue where private repositories required a schema in AuthData to work.
• Bug - Fixed issue whereby metric submission could fail and never retry.

Amazon ECS Agent - Release 1.5.0 - 2015-10-02

• Feature - Add support for additional Docker features.
• Feature - Detect and register capabilities.
• Feature - Add -license flag and /license handler.
• Enhancement - Properly handle throttling.
• Enhancement - Make it harder to accidentally expose sensitive data.
• Enhancement - Increased reliability in functional tests.
• Bug - Fixed potential divide-by-zero error with metrics.

Amazon ECS Agent - Release 1.4.0 - 2015-08-17

• Feature - Telemetry reporting for Services and Clusters.
• Bug - Fixed an issue where some network errors would cause a panic.

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.