MacBook Pro 5,2 (no metal GPU)
I installed OCLP 1.5n (OC now 0.99) onto the internal SSD, and rebooted into a unique volume where 14.4 RC already resided (installed from another volume). I was actually able to log into the system using an external USB keyboard and mouse, both routed via hub plugged into USB port on the machine. The desktop was a blank screen until I reset NVRAM, thereafter machine booted into the true desktop, and there were actually items present in the menu bar. Launched OCLP 1.5n and was still able to enter password to apply patches. I had Ethernet plugged in and OCLP did download latest KDK before fully completing the patching process. Rebooted, and logged in, got to desktop, just to be automatically logged out. I kept re-logging, and with each re-login I was able to access more items on the desktop. In the end, while there was no menu bar, machine no longer looped, and graphics were fully (?) accelerated. Internal trackpad and keyboard were fully functional, including backlight. Applications could be launched from (fully functional) dock using the mouse. Some documents associated with applications could also be accessed. MacBook Pro can go to sleep and “wake-up” without issues.
Launched system settings from the dock, and selected update to 14.4, the formal release (via OTA).
OS 14.4 installed without problems,; keyboard and mouse were still functional, and after couple of login loops (and re-logging) I was able to reach desktop.
Again, there was no menu bar, and I was no longer able to reapply patches due to loss of focus (can't type into specific field to apply root password). However, graphics were still fully accelerated, trackpad works as well. Keyboard is backlit, and pressing key elicits sound, implying the keyboard is active, but there is “no focus” as to where to send signal. Implication here is (?) that whatever changes were instituted with final release, did not directly affect patched graphic system items, and, there is a reasonable hope that non-metal machine may be able to function.
In conclusion, only two (visible) items remained to be "enhanced" by the great OCLP team: menu bar and focus (both issues were already reported by other posters).
iMac 13,2 (metal capable machine) runs incredibly well on OCLP 1.5n, and as previously reported, time from startup to login screen is greatly reduced.
I can connect to MacBook Pro 5,2 from iMac 13,2 and transfer files, so basic connectivity is also functional.
Great work by OC and OCLP teams.
Hope this may help.