Great question – right now I don’t think we’ve got anything that will make this particularly easy, but the admin-side list of events builds on WordPress’s WP_List_Table class and so if you are familiar with WordPress development in general it should certainly be possible to customize things in this regard. Beyond that, the post publication date is exposed within the event editor if you need to check on a specific event.
If you think sorting by publication date may generally be useful, please do post a feature request to that effect and we’ll certainly consider it.
Thanks!