Well, if this is really true (Toyota is no new or small start-up) it is certainly going to tick all the major boxes remaining for EV batteries as far as economic requirements go.
Ease of manufacture, range, charge time, and safety were some of the biggest factors holding many back from adopting EVs.
Yes, price is also quite a big factor, but if this is produced at scale, or even is slightly smaller sizes, the price factor can be overcome. I’d be quite OK with having a 500 km range battery that could charge in 5 or 6 minutes.
One issue not mentioned, though, is whether there is any improvement in the rare metals environmental impact. That will probably still factor lower than the other considerations, though, mainly because EVs already have an overall lower impact than ICE vehicles.