Originally Posted by UKtravelbear

I've not seen any reports of anyone been downgraded due to this.

It does look as though VS have only been selling 31 seats until it knows which version it will actually be flying on a particular flight in which case there could be opportunities for a couple of last minute miles / cash upgrades.

And unless you are flying on a particularly busy day it is unlikely that the cabin would be full anyway.

But what VS do is ask for volunteers in advance - I've seen reports of people being phoned up in advance asking if they would like to change to a different flight for example in return for some miles and cash.