Hmm...I must have missed the BF PS4 announcement. Nothing on the website about it. I also expect one of the two games (MGSV) to go to PS4/720, but nothing official yet. My apologies if I did miss this news?
Similarly, I missed out a load of games to try and support the OP, because do you really think the 8th gen is dead? It'll be a tough start for sure, but dead? Indeed, there's plenty willing to move on in gaming forums, but I'm unsure of the wider picture is the same.
People need to stop being so defensive. It's rather frustrating posting any comment which is perhaps slightly negative towards a company (be it Nintendo, Sony, Microsoft or all of them) and getting all sorts of responses which just come off as aggressive (even if they aren't meant to be). I don't mean to cause offence to anyone, obviously, but I've noticed a lot more arguments nowadays than, say, 12 months ago. And I don't know why.
Anyway, to get back on topic, it's pretty tricky to tell just what will happen. There's never been a scenario like this before, and possibly not again. It should be interesting to see, though!