On the series page you can change the view to Posters or Overview List or Table, the only view that has the sort options is the Table view and this lets you sort on any of the fields.
The good thing is that the sort order is kept for all the other views now so you can go to table view and select sort by next air date to see what is coming up next and then switch to any of the other views and it works.
The problems:
- The sort order is not kept between visits, leave the site and come back and the sort order is reset
- The sort order is not shown on the other views, it would be good to see what you are sorting by next air date when viewing posters
- If you set sort order to next air date on the Table view and then go back to Posters and then back to Table view the sort order is maintained but the sort indication at the top of the list is shown as Title sort.