So, I have tried the Enablement Package, being already released as windows11.0-kb5027397-x64.cab in September!My old workinghorse, a HP Z420 WS with TPM 1.2, a nonsupported CPU and SMBIOS 2.7 got a clean install in August.
I used a WIN 10 19045.3570 ISO and exchanged the install.wim from a 22621.1848.
The setup ran without any interruption. Today im on 22621.2715. Till now I didn't try the Enablement Package.

It took 3 seconds, a reboot and the expected result is there.

My Computer
System One
-
- OS
- Windows 10
- Computer type
- Laptop
- Manufacturer/Model
- HP ZBook
- CPU
- Intel 6700HQ
- Motherboard
- HP
- Memory
- 24
- Graphics Card(s)
- AMD FirePro 5170M
- Hard Drives
- Samsung SSD 860 Pro
- Keyboard
- yes
- Mouse
- yes
- Other Info
- 19045.3803
some Red Hat workhorses