All, There are several changes and additions in the Github Issue tracker for STIX 2.1 (
https://github.com/oasis-tcs/cti-stix2/issues ) that people have identified so far. Please review the list and add anything that you have run in to that needs to be fixed. The two semi-breaking changes that I would like us to consider in the short term are: Issue: 37
https://github.com/oasis-tcs/cti-stix2/issues/37 Basically make the object type labels that are tied to a vocab be different from user defined "tags / labels" Issue 36:
https://github.com/oasis-tcs/cti-stix2/issues/36 Change the hashes element of external references to be a single hash (not a list of hashes) and define the hash that needs to be used. We added this feature at the very last minute of STIX 2.0 and unfortunately we got it wrong. Bret