There is no production line for the current generation bolts. They're building a production line for a new architecture (MY2025+), but there are some significant changes to that design that many people might consider negative (e.g. lack of Android Auto/carplay) alongside the standard risks of buying a first generation architecture.

Discontinued doesn't mean unavailable. I thought it was cancelled as well and took a look at Wikipedia. According to that source there will be a new model at some indeterminate point in the future.