Adding Public Blockchain to AWS Managed Blockchain

Hi All, I recall from a few sessions at re:Invent last month that it was mentioned AWS is looking at expanding the blockchain options going forward for the AWS Managed Blockchain service. I volunteer with a small blockchain project that has our own distributed chain and would like to see if/how we could get added to the service as it would be a good option for future people who want to build on and utilize our chain. Does anyone know how to go about getting on the list (if one even exists) of chains to be added to the service? I couldn't open a support ticket as my personal account is just on the free account and figured I probably shouldn't use my corporate account for this query.