We've posted an announcement about the availability and usage of the ECDSA hierarchy in production: https://community.letsencrypt.org/t/ecdsa-availability-in-production-environment/150679/2 If you have any questions or concerns, feel free to put them here!

Questions re: Production ECDSA allow-list

Topic		Replies	Views
ECDSA intermediate issuance Help	15	5253	June 18, 2021
Lets Encrypt ECDSA certificate request for new accounts Issuance Tech	25	1490	January 6, 2024
ECDSA certificates by default and other upcoming changes in Certbot 2.0 Client dev	40	18123	June 1, 2025
ECDSA Root and Intermediates ISRG/Organizational	28	8251	June 11, 2020
"EC XXX bits (SHAXXXwithRSA)" versus "EC XXX bits (SHAXXXwithECDSA)"? What's the difference? Does it matter? Issuance Tech	25	5637	September 4, 2022