Welllll ... they haven't been released yet, but yes! There has been work done. :) For example, thanks to everyone's support, I was able to find the original artist again and commission missing sprites that will be important for Open Ended Mode. But those characters are also in Story Mode, so they'll have sprites there, too! And I'm thinking about writing extra content/re-scripting scenes so that you can see them now.
For example, here's Tracy (for Owen's route), Sophia (for Beau's route) and Tiffany (for Marcus/Emmitt's route):
They're still a work in progress, but here you go! :)