I’ve just downloaded and started today’s ISO and that’s the only sound that I’ve heard so far.
But back on topic, as the vanilla-gnome-desktop package is in ‘universe’ and not ‘main’ it’s not even available to install and test in a live session unless ‘universe’ is specifically enabled which it isn’t by default. Even after installation you have to know that the package exists otherwise you would not know that it is available to install.
I doubt that that there will be much in the way of future development for this package. I think it was provided just to give users of the former Ubuntu GNOME flavour a familiar look and feel to what they already had when upgrading from their former flavour of choice to mainstream Ubuntu. We should still report bugs though. 