Yeah python is more or less the current reference impl. I think the plan is to move to cdk.  nostr:npub12rv5lskctqxxs2c8rf2zlzc7xx3qpvzs3w4etgemauy9thegr43sf485vg can answer definitively.

https://github.com/cashubtc/cdk

Check out the first cdk implementation here:
https://athenut.com/
https://github.com/thesimplekid/athenut-mint
https://github.com/thesimplekid/athenut-frontend