I am thinking the 15 will be my last for a few years. The big upgrade this year for me is USBC. Yes it is inferior in some respect to lightning but with iPad and MBP and most other devices being USBC it is a pain carrying around extra cables for phone. Will be nice to be able to unplug from 3 in 1 stand and plug straight into phone for fast charge.
like most years, I really don't have a compelling need to upgrade but I've been saying that for the last 13 years!
I've been wireless charging 99% of the time with the 14.. even got that mag safe duo (sucker I know) but works well for work travel and holiday times when I just need one thing to charge phone, pods and watch.
if the rumoured 16 size increases do materialise, I might have to go down again in 2024