Spare me.
You're making it sound like the Switch devs are stalking retail 24/7 looking for a roll over on serials, none of which actually guarantees you'll know if Mariko is or isn't in the box given a specific date because you don't know what the production lines are doing with which SoC or when or what overlaps exist (unless they specifically roll over an integer to set up apart rev0 and rev1, which we have no idea if they will or won't, unlike cart reruns). Yes you can ballpark it off of the serial number to know if its reasonable for the time frame, but its not telling you anything definitive. Random people buying Switches and finding a new firmware and potentially the new hardware is how you'll actually know anything when word gets out over a few days, not some grand retail monitoring scheme.
The entire point I was making was: if you want a hackable Switch buy one now, T214/Mariko can/could arrive very soon, and the longer you wait the more you have to start playing roulette or just buy off of ebay.
