Xiaomi will be launching the POCO F3 and POCO X3 Pro today, but multiple details about both devices have already flooded the internet. From marketing renders to the first stable MIUI build for the POCO F3, there is little left to reveal about Xiaomi's new POCO devices.
https://www.notebookcheck.net/Xiaomi-POCO-F3-and-POCO-X3-Pro-renders-leak-ahead-of-today-s-launch-MIUI-stable-update-already-live-for-POCO-F3.528665.0.html
You've got a typo where "Poco F3 may be a re-branded of Poco F3", we both know it was meant re-branded of Redmi K40.