I guess it's kind of an archaic term but it means broadcasting media via multiple channels at the same time. In this case it means that when the next episode o

I guess it's kind of an archaic term but it means broadcasting media via multiple channels at the same time. In this case it means that when the next episode of a show is broadcast via cable or over-the-air in Japan (probably cable in 2017) it's also simultaneously available on websites for folks who don't have Japanese cable. A simple modern example is being able to listen to the announcers of a sports match on radio or watch the same announcers via the television transmission. Google defines a "simulcast" as a simultaneous transmission of the same program on radio and television, or on two or more channels.