> it is really very nice improvement for our Efikas.
> Many more applications now works.

I just had a look with which MorphOS version this feature implemented with Radeon drivers v52.5/v52.6 was publicly released. Kronos wrote "10+ years" and indeed, MorphOS 2.7 came with v51.17 and MorphOS 3.0 with v52.17, so MorphOS 3.0 from August 2012 is the one.
It's pretty unfortunate that this nice feature went unnoticed und unused for as long as 12½ years, especially considering that MorphOS 3.0 also introduced 256 MiB VRAM support (#6) enabling Efika configurations with 352 MiB RAM + 32 MiB VRAM, for instance.