Woolite

I don't think they mentioned any sort of time frame.

Oh, one of the things they did say was they want the new slots to do more than pump stats (though they do know players like those too), so they'll be more along the lines of letting you do things you weren't able to do before. I don't remember if they gave an example of what that meant though.

The impression I got was that they are working several ideas and weren't able to put a release date on anything until they have a more concrete concept of what they want (and what the players will like).

They were mentioned briefly during the Endgame panel. No major info though.
If I remember correctly, they are working on them. Some of them have changed from their initial design concepts (and the names may change too). And, no estimated release time frame was given.

So, yes. They were mentioned, but no juicy news.