Looks like other folks are getting in on this "we need more journals on comics and sequential art" argument. Routledge is publishing Journal of Graphic Novels and Comics twice a year starting in 2010.Subscriptions are $45 a year and the editors are out of Manchester Metropolitan University in the U.K. Bart Beaty, Charles Hatfield, Mel Gibson, Joseph Witek, and Rob Weiner are on the review board, which is international.
The aims and scope of the journal suggest it will cover all aspects of comics and mentions being interdisciplinary, but education is not mentioned specifically as a particular interest of the journal (meaning I still have my niche market for SANE journal. Yay!)
I can't tell for sure if it is an ejournal or will be print-based (it may well be both), but it looks like a great new outlet for comics scholarship.