As far as CT production goes, here is what I think it's happening.
4680's production is not going as planned. I wouldn't say that it's Tesla's problem. But rather, the suppliers who Tesla has on contract cannot shift their production line to 4680 at the pace that Tesla is seeking.
Thus, given the delay in 4680 productions, and the fact that Austin is optimized with 4680 in mind, Tesla needs to make choices about where to divert the finite resources.
Here is what I predict it's going to happen given the limited number of 4680 that would become available.
Semi is a go. It will ship to major customers, at least with enough quantity that they can carry out a proper cost analysis by switching to Tesla Semi.
Model Y Performance or maybe even Plaid will be produced there. Again... only model that can take full advantage of 4680 and with the margin to match would be allocated. This can also prevent people from waiting to order their Y simply to wait for 4680.
Last but not least, quad-motor CT will start production. It has the margin to match and take full advantage of 4680. The remaining variants of CT would be produced as the production of 4680 ramps. I think all tri-motor reservation holders would be given the option to switch their order to quad or wait. A nice upsale tactic I guess.
The assumption is taken because it's going to take time for Austin to ramp up production, and it can match, on a production level, to 4680 batteries as they become more and more available. And as soon as 4680 enters full production, they can be made available to less profitable models. This is what I think makes the most economical sense in term of cutting-edge products.