@T_Bone
Actually, AOS4 is a continuation of AOS3.1... H&P wouldn't supply Hyperion with the 3.5/3.9 source.
While essentially true, I think some of the third party contributors to OS 3.9 - and let's face it OS 3.9 was mostly third party contributions anyway - have contributed their work to OS4 too.
Just how well everything works once it's been bolted together remains to be seen.
But this is no longer on-topic, as it's about the OS not the A1 boards.