The update to the 24-inch iMac has allegedly entered a late stage of development, making it very plausible for Apple to release it in the second half of 2023.
New 24-inch iMac in production testing, but won't ship until late 2023
Apple supercharges 24-inch iMac with new M3 chip - Apple
iMac M1 2021 review: the all-in-one for almost everyone - The Verge
Give Your Old iMac New Life With a DIY Upgrade
A new iMac might finally arrive later this year
New 24-inch iMac in production testing, but won't ship until late 2023
Apple iMac (M3) review: when enough is enough
Refurbished 24-inch iMac Apple M1 Chip with 8‑Core CPU and 7‑Core GPU - Silver - Apple
Apple Mac Studio Review. Apple Silicon is delivering on its…, by Mark Wherry, Mac O'Clock
Apple iMac review (2023): Nothing's changed, except the M3
iMac - Wikipedia
Apple Studio Display: Everything We Know
Apple Readies Its Next Range of Macs, Including — Finally — a New iMac : r/apple