I’m glad I know this exists now, not that I can see myself using it personally (as I love to read books in bed) but certainly many educational uses I can forsee. Definitely as mentioned for ESL and Special Ed.  I can also see it as a great resource for early years literacy groups, instead of listening posts, kids can have the experience of hearing the texts read with the images as well.  The scope for variety of texts that become accessible is amazing (also for books from last century and earlier!) WOW.