Just asking the question without mention of Gord's name, my name, or TSoD itself will usually mean that either Gord or I will see it. We keep a very close eye on this section of the HTF, as you can imagine!
If we fail to answer, then it usually means we have nothing to say. Don't interpret that to mean "we know something but cannot say it"; we rarely if ever are keeping secrets on something (and if so it usually doesn't last long, though there are the odd exceptions like we've known for a couple of months that the theme song for Married...with Children was in jeopardy of being cut from S3; however, if we spoke too soon then last-minute negotiations would have most certainly failed and we didn't want to be the cause of THAT!).
In the case of Animaniacs, this is one of those that I would absolutely adore seeing on DVD, but if it's coming then I just don't know it. Sometimes we find out about stuff waaaay in advance, and other times we find out at the last minute. Night Court is a great example: Warner effectively kept the secret from us all along, and then last Friday we were like

!!!
When I saw the word about Night Court, I was dancing around the room naked (that's a long-running joke here at HTF about my chosen form of celebration when a favorite item is announced). If word about Animaniacs came down, I would be doing a nude boogie about a half second later....
I know that Warner is VERY well aware of the public demand for Animaniacs, and related shows like Pinky & The Brain, Tiny Toons, etc. Their resistance is wearing down, and they will be bugging Speilberg and company for help putting these out before long...if they haven't already secretly started!
Keep voting for this stuff at TVShowsOnDVD and keep talking about it here. It makes a difference, I'm sure of it.