its the same as if someone houtside hyperion has released amigaos5.
...expect that wasn't that exactly the original plan?
That Hyperion does AmigaOS 4.x, while Amiga inc. develops AmigaOS5+ inhouse?
I know, that's "highly unlikely", but doesn't change the fact, that was the original plan
As for MUI, I also question, why this is called 5.x, does it indeed have all the new functionality?