Way back in Kickstarter Update #37, Shyla reported:
Over the last few months we have been working extensively with Yasumi Matsuno and he has been busy finalizing the scenario details and character development for Unsung Story. We now have the first three full scenarios completely mapped out with their component stages. From this, character design is moving forward, and Akihiko Yoshida will be focusing on key character development from the scenarios and main story. We expect to receive the first art pieces from Mr. Yoshida in the early fall, and we are looking forward to sharing some of those designs with everyone once we have them in our hands! Additional concept work to define the architecture and culture of both the Kingdom of Alionne and the Jheksal Empire is also well underway, including expanded concept art for the base character classes. We should have some of this concept art ready to share with everyone at the end of next month. In addition, Hitoshi Sakimoto and his team are reviewing the storyline and the current scenarios in preparation for composing the music that will help bring Rasfalia to life.
That was back on July 31st, 2014. It's been about a year since then, but as far as I'm aware we haven't seen anything like this revealed to backers.
Is this something you want to see? If so, what's the best way for Playdek to share it?
I'm voting for posting it on the forums with a SPOILERS tag, and then linking to it in a Kickstarter Update. That accomplishes two things: first, it means people who don't want to be spoiled won't accidently see anything in the Kickstarter Update text, and secondly it might encourage more people to join the forums and people to be more active.