@pkouame about your useful recent analysis:
1. CoreDisplay .3 only has a 64 code (no 32 bit support)
2. CoreDisplay .5b+ (and probably .4) has both a 32 and 64 bit
I can confirm that CoreDisplay .4 does have both x86 32 and 64 bit support and using
10144CoreDisplay.framework.zip still bring OpenGL acceleration in combination with .3 OpenGL and GPUSupport.
So I guess it doesn't strictly depend from a 64 code.
Anyway am a bit worried for this .5 beta3 delay.
edit:
From my non-clever analysis also .3 CoreDisplay does contain both x86 architectures, probably you analyzed only a CoreDisplay taken from a BaseSystem.dmg and that's only 64 bit.
But all the frameworks and kext from a BaseSystem are 64 bit only I guess, I call them incomplete, while taking them from a Core.pkg will contain both architectures.