Try my luck as well, cancelled my yesterday night 13/11 delivery order for the iPhone 12 Pro Max 256GB Pacific blue, just re-order via Shopback app to try the 5%, collect at Jewel on 13/11 afternoon.
Casing and AW6 too bad already prepare to ship so just let it be, arriving on 13/11/2020.
Surprisingly the all colours still ready available for pick up, like alot of stock for our 3 Apple Store
Already delayed 2 months from the usual yearly Sep release due to Covid, whereas Samsung still did release their N20U & ZF2 flagships on time. Apple don't wanna lose out on market share too.
Xmas is near. Definitely Apple have and already did ramp up the production figures to cater for the known large influx of Apple fans.
Apple iPhones has the largest casing support from different brands. Look at Z Fold2. Released on 18 Sep, nearly 2 months already yet very few casing choices. No brands wanna mass produce casing for it as they don't have confidence that orders received > production cost.
Examples are caudabe, catalyst, nomad. They don't suport Samsung Note20U, ZF2, let alone Pixel and Huawei, etc.
iPhone is a big thing. So its no surprising that the supply this year has over-ridden the demand.