ebooks: Libraries at the Tipping Point

I am looking forward to the one day virtual SLJ conference ebooks: Libraries at the Tipping Point. The day includes "keynote presentations and panel discussions on the evolving concept of the book in a digital world and will keep participants future-focused".

What are current best practices for school library ebook collections? What are effective delivery practices? What format is optimal - handheld devices, audiobooks, etc.? How can ebooks become a seamless part of the current collection?

I eagerly anticipate discussion centred around tearing down the notion that school libraries have fixed hours, schedules, collection formats, and walls.