API 2.1 now live

We are delighted to announce that the latest version of our API - version 2.1 - is now live. 
The only difference between 2.0 and 2.1 is in the format of the ORCID iD, now updated to the HTTPS canonical form: https://orcid.org/0000-0001-2345-6789. There are no other functional changes to API calls or the XSD in this release. If you prefer to stay on 2.0, please rest assured it will receive the same support and sunset date as 2.1 (and we hope to push the sunset date out as far as possible).
If you are currently developing an ORCID integration, we encourage, but do not require, you to develop using API 2.1 to enable your workflows to benefit from HTTPS ORCID iDs. 
If you are already displaying ORCID iDs, we recommend that you switch to the HTTPS version of the ORCID iD. See our updated Trademark and iD Display Guidelines
If you haven’t yet started your ORCID integration, we encourage you to do so using API 2.1.
Please let us know if you have any questions.