Also, tag helpers for audio and video HTML5 tags have been pushed to edge rails - http://bit.ly/PGV5B http://bit.ly/PGV5B So doctype change must've been made m

Also, tag helpers for audio and video HTML5 tags have been pushed to edge rails - http://bit.ly/PGV5B http://bit.ly/PGV5B So doctype change must've been made mainly to support these tags.