Please see the following pull request:
Adds T3 Instance Types
There are several things that need to happen to support this:
also related - https://github.com/kubernetes/autoscaler/pull/1234
https://github.com/aws/amazon-vpc-cni-k8s/pull/145 has been merged and 1.2.0 is now available.
Released in v25
Most helpful comment
There are several things that need to happen to support this: