its not illegal to watch the early transmissions, it would be illegal to record and distribute them tho,
so what u really meant was, "When will I be able to tune into the broadcaster's distribution stream"
I doubt many people would know, as these days these shows are sent in digital signals, so not many people can do it anymore, as u need some pretty sophisticated gear to decode them, as they are encrypted.
if you're lucky enough to have the gear, search it out on google, everything I know about the early airings is off stuff I got off google. I know some people who have access to these are on IRC (gee I wonder why?
), prehaps u could ask them?