When will more progress be made on Era metadata? I realize that the older works take more time to sift through since pub date and authorship date are likely very different, but most of the newer works are pretty straightforward as far as era dating. Most all in this list would be in the Contemporary category easily.

Any idea on when these works will be updated?
Is the lack of data due to the fact that most are type:Study Bible? If so, will these eventually get Era dating?
Thanks!