The next story update will have more Riley to follow up on what can happen at the party. The update being worked on now is a smaller, interstitial update that revises 300+ CGs and an unlockable bonus hookup, to tide us over until the story update is done.
So basically: New You Update is next adding new CGs and a hookup, followed by Morning After Update that'll continue Riley and everyone else's stories. No firm release date for either yet.