Section 3.3, which discusses sorting, is worded such that many first-time readers incorrectly conclude that the specification makes incompatible statements about sorting rules.

The proposed change is that the wording be clarified so that first-time readers do not make this conclusion. Normative changes are not proposed.

We talked about this at the F2F and have proposed text in the document to address this.

In section 3.3 the text now reads, and I believe is more clear for first time readers:

For Object and Manifest Endpoints, objects returned MUST be sorted in ascending order by the date the object first appeared in the TAXII Collection (i.e., the added date). The most recently added object is last in the list.

The Collections Endpoint MUST return Collection Resources in a consistent sort order across multiple requests.