Release 5.1 of the Code of Practice came into force in January 2025, with a requirement for reports to be delivered by the 28th of February. (https://www.countermetrics.org/live-r51/?searched=r5%20harveste) See for for the details : https://www.countermetrics.org/education/whats-new/ https://cop5.projectcounter.org/en/5.1/appendices/b-changes-from-r5.html
+1, yes, there are about 175 publishers, data hosts, and platforms that have migrated to R5.1.
Increasing the importance of this.
Just adding that since some vendors are dropping COUNTER 5 support (EBSCO, for instance) it makes it impossible to pull their usage statistics until Koha supports the 5.1 releases.