I haven't read any crazy comments. I shall check out the fandom tomorrow to observe the madness.
As it is the only thing that stuck out in that article/interview was this:

And with their departure, does that mean we've seen the last of River Song (Alex Kingston) too?
Moffat: "No, not necessarily

Whoooo!!

As regards Jenna. She seemed like a nice and enthusiastic girl. Not really any other information leapt out other than that.
Oh fandom, what craziness are you spouting?