Probably Switches could be sold out next week again. I just can't see that retailers have so much room for this big a game release and as Switch is still early many who want Pokemon still don't have a Switch. So probably what retailers have in stock, which could be 100K-150K. The sold out situation will be kept for only a few days though. So the week after hardware sales should still be elevated.
We've already got Chris on Era saying that the bundles are not at all supply limited. Whoever wants to buy a bundle will be able to.