It looks like the YYC-YVR Jetz flight on the 26th is now being sold as AC201 (previously AC1235), and they're selling it all as Y. It doesn't say operated by Jetz, but it's clearly a Jetz seat map. Rows 11 and 12 all selectable.
It's interesting, yesterday it was also AC201, but it was being sold as all J, and they were charging a premium over the other flights that day.
Right now, pricing is in line with Y pricing for other flights that day.
What a pleasant surprise that will be for anyone who bought a Y seat on that flight!
Either way, it's a 6:45AM departure, and I don't really feel like getting up that early (or paying such a high price in dollars or points), so I'm going to pass