I was able to make a deal and will trade in my 568 for a v2 model. [Linked Image from softronix.com]
However, since the shipping date is still not clear here (the Netherlands) I'm not sure when this will happen.

Coming back to 5.1 analogue inputs:
Since the multichannel link is a separate board in the 568, it should be possible to feed either a triple digital feed or a 5.1/7.1 analogue feed over the link. This would require adding A/D converters to the card, but would not require extra room on the back panel.
And since the current 568 has a lot of empty space inside this should physically be possible.
An added advantage would be that it could be done as a 'simple' replacement of the current multichannel board.

But this is all academic for the moment.
I will start by enjoying my 568v2 once it arrives and worry about DVD-A when (if?) there are any releases on it I cannot do without.

Regards,
Mark