The reason why they might’ve held back on the new stuff until Sunshine could’ve been because of the Nintendo pop-up store in Singapore and the associated discounts on the paid banners that happened, perhaps they were waiting for the discount period to end before adding the new items to the game so the regions that got the discounts don’t get an unfair advantage by being able to buy them for cheaper, if any of them are paywalled
But if true, this could also mean that one or more of the new items might be paywalled…