The funny thing is, I was searching for Thunderbolt 5 yesterday after the announcement of the iMac. I was trying to figure out how it supports 8K 120Hz, bandwidth, and other specifications.
For the MacBook Pros, I was planning to upgrade from my M1 Pro. However, I told myself that I would only upgrade once Wi-Fi 7 is released for MacBook Pros. If the M4 is based on the same production technology, I would imagine that even the MacBook Pro M4 Pro or M4 Max would have Wi-Fi 6E as well. So, it seems like I need to wait for the M5 Pro/Max with the A18 Pro technology.