Bitcoin Optech newsletter #338 is here:
- announces a draft BIP for referencing unspendable keys in descriptors
 - examines PSBTv2 usage
 - corrects our description last week of a new offchain DLC protocol
 - changes to services/client software
 - #338 Recap
 
Draft BIP for unspendable keys in descriptors:
PSBTv2 integration testing