https://mix.office.com/

I don’t have Office 2013 to try it out, but it sounds like this free plug-in has a lot of potential to easily create elearning content. I’m not sure how interactive it would actual be, or if it’s just a glorified webcast. Still I’m cautiously optimistic. It’s marketed toward the K-12 demographic, but I’ll be interested to see if it’s picked up by the broader elearning coterie. P.S. It even has limited support for iOS devices and they claim that the full interactive experience will be available soon.