It's already in production. It's already for sale. There is no promise. It's performance is known, the zeekr 009 has been on sale scince Jan.
700-1000km is because they will go into different cars with different sized battery packs. The 009 is a mini van.
The main issues for the US market is no north American manufacturing, and cold weather performance. But catl supplies tesla usa already, from china. These are better batteries, likely cheaper by 15% per watt hr.
Tesla will probably reintroduce a rwd long range, while the rwd will just get a smaller battery pack, same range but a price drop of, $5k.
The long range awd and performance will retain same chemistry. Maybe move to 4680 cell packaging.