The FFG employee running the Twitch chat feed during Worlds gave an interesting answer when I asked, directly, when would we see another Wave 8 preview. They said that everything posted needs to get approved by LFL before they can put it up, thus the delay. They're super excited for Wave 8 and *want* to talk about it, but can't.
edit: They're, not their. Derp.
Edited by Slugrage