They HAVE plenty more to show from what I've heard. They've already got a substantial amount of the new critter AA's completed. I'd also bet some of the human figures are already done too, more standard A1000s apparently. For some reason, they're keeping a ton about this ride a secret.
I also suspect this may be an older video. An "amazing state of the art Louis AA" was one of the first ones I heard was in testing last year. It sounded like it was in a mostly complete state at the time (at least the internals). Unless this particular Louis figure is different than the one they tested. But then again, why not show the one they were testing if so? It's pretty weird.
And as I said, myself and others are aware that a CGI ridethrough exists. They showed one of those for Beauty and the Beast and 7DMT years before opening. So they could show the one for Tiana as well.
It's a vague "late 2024", no specific month. Though they do seem to be going at a fairly swift pace based off what it appears. I also heard there was a desire from imagineering to get it done much earlier, some of the more aggressive people even pushing for mid-late summer. But it's up to corporate to allow it, dunno if they did.