Their kickstarter has the most updates:
To quote their Aug/Sept update on development:
"General Development
Ren is now finishing up Anja's endings! All of Anja's chapters have been completed, but we expect his endings to more or less total the same length as an entire chapter. We can also confirm Anja's route is already around 25% larger than the common route.
Art Department
We've received the final background from Rudy, but again, we may commission another 2-3 depending on whether or not the story requires them.
Curry has begun working on the King's CGs!"