I had the issue as @jfabernathy when I updated last night. There was a suggestion to switch to LTS or to downgrade. I ended up downgrading back to standard kernel 6.2.2-arch2-1 and my WIFI is working again. I did however install the LTS 6.1.18 today just to have it as an option as well since that was suggested to me last night and it was referenced in the the warning post this morning about some folks having issues with the new kernel. I did hop on to the LTS kernel to see what it was like and I had the same WIFI issue I had on standard kernel 6.2.5-arch1-1. I am also running on an old Macbook Pro. I thought it was strange. So I am still using the standard kernel and I am going to have to try and do a little more digging on this WIFI issue. Just thought I would mention this here in case others have the same issue