We got an Internet-Draft on XMSS out! The first version was published in Spring and presented at the IETF 92 meeting in Dallas. We also had an accompanying report at the NIST workshop on post-quantum cryptography. Our draft was now accepted as a CFRG working group draft. Currently we are working on an update that is planned to be published before the IETF meeting in Prague this July.
Internet-Draft on Hash-Based Signatures