They probably wont stream the progression fights (Lei Shen and Ra-Den) because they don't want other guilds watching and potentially getting their strategy and executing it for the WF kill.
Method streamed bosses 1-8 a couple days ago but thats about all you will get right now probably.
The closest you can come afaik is Sco from Methods stream. He shows the kills on the previous bosses and jumps in to update when they have downed a boss.