It's not a secret. I personally haven't experienced it...i did the weave back in the fall, but from what i hear it's a 20 question test right from ATP questions plus a couple essay questions (situational). Look at the scenarios on aviationinterviews.com...i.e. drunk captain, gpws, cargo light, no response at minimums and envision them as essay questions.
This is all hearsay, but I'm pretty sure the new process is close to the above. Obviously there is still a panel interview and I believe that is still similar to the way it used to be.
Hope that helps.