Sorry, slightly off topic: While I was waiting for my 16" MBP a friend lent me his old 2012 15" MBP with i7 and 8GB RAM/256GB SSD to play with Catalina. I clean installed the OS, wiping all existing partitions. I still have it, till the new year.
It's been wonderful. Super snappy and stable even with Xcode, Firefox (many many tabs), Safari, Apple TV etc running. I can imagine it will be even better on newer hardware.