A new features document was produced for every release of JMP through JMP 17. These documents have been concatenated together, starting with JMP 5. Starting with JMP 18, the new features document is no longer being produced. As an alternative, the highlights paragraphs from the training starter have been collected and appended to the file.
This document can be helpful for answering questions such as "when was this feature first added into JMP" or "what's different between release X and release Y".