Please Intel are you even considering this issue ? With the success of the NUC there's a lot of us out there struggling with this HDMI sound clock issue with some Pioneer amps. Check the OpenElec and XBMC forums for instance. This should be pretty easy to reproduce.
1080p @50p pr 60p + 44.1 khz sound (or 88.2 khz for that matter) remains silent.
Can you please confirm you have identified the bug and looking at it ?
Thanks