I read the title, thought "really ? I have heard 2-3 rumours from podcasters ... and that's it", I clicked ... so, well, indeed.
But I don't care: I have the all-in of the 1st edition and I haven't digged through all of it.
Ditto - I thought the same thing. And for me, I have the full collection of Advance materials, so will likely be stepping back from 3rd edition.