The delay in updating the folders for Digital art came from inability to make my phone do it because apparently they've changed something about the way you update galleries and I couldn't make it happen from mobile. But I've fixed it, and added a Best of 2016 folder as well.
I will soon be going through and purging old folders so we can keep our galleries fresh. You will be able to resubmit submissions, but remember it's better to resubmit ones you feel should be seen again, over quantity. I will keep everyone posted on that.