After watching the video, it's clear that Jerome was not prepared to answer any questions about the Roadster. I believe him when he says that he saw the car, but it may have just been a darting glance, rather than any type of extended study. It wouldn't be out of the realm of possibility that Jerome said, "much nicer" and "more modern" just as puffery, unaware of the exact cosmetic changes. I'm not saying that's the case; it's simply the impression that I came away with.
In comparison, Jerome is very detailed and specific when asked if early Model S cars would be able to utilize the new technology. He talks about the rake of the windshield, the headliner, wiring, etc. Compare this to his initial response to the Roadster question, which he says is "interesting". Then, not wanting to appear unknowledgeable in the area, just ad libs, "much nicer", "more modern". Of course, the lack of detail could be because Jerome knows that information is not yet public and doesn't want to leak secret information.