The 4680 MY doesn't happen without the structural battery pack and the front megacast. Plus the existing rear megacast. It's an all-or-nothing proposition.It does make a certain amount of sense that the Austin Y’s would have a lower range (ie use fewer cells). It certainly solves the problem of people wanting to cancel orders to switch over.
The bigger question for me is when will Fremont switch over to front castings and whatever other upgrades the Austin Y has? I don’t care about 4680, but I’d really like the stiffer frame, door panel, and whatever else they’re switching up.
For Tesla, the MY v2.0 chassis is all about making the car faster, with less cost, and higher quality. Very good things for both Tesla and customers.
For customers, the 4680 'Battery Day' presentation sent the blogs into overdrive and now peoples' minds are mush. Every wishful thought is given credence. Bad.
It's entirely possible that the newly EPA-rated MY version could be 4680-based. Especially given the delayed ramp-up of those new cells and initial lack of availability.
It's also possible that the new MY variant is LFP battery-based, making complete sense for cost control and consistency with what China ships to the European market.
No one outside Tesla knows anything about any of this (well, certain regulatory and testing centers may know...)
Tesla isn't saying yet, and the blogs will do what they do.....clickbait !!