I don't know if PG Music has changed their procedures but it use to be considered normal for the program update notification to lag behind one update.

The explanation I remember is this allows PG Music to remove the current build release if a severe issue is found soon after the build is released. This kind of situation is rare but it has happened.
Jim Fogle - 2021 BiaB (833) RB (Build 5) Ultra+ PAK
Cakewalk - Zoom MRS-8 recorder
Desktop: i7 Win 10 build 2004, 12GB ram 256GB SSD, 4 TB HDD
Laptop: i3 64bit Win 10 build 2004, 8GB ram 500GB HDD
Music at: http://fogle622.wix.com/fogle622-audio-home