I remember that post actually, it got me a little excited. I don't see him being the guy though.
Firstly that interview made it seem like people might be skeptical about the vocalist (which is why they have not announced) which says to me the dude might not be an expected choice, maybe in a different genre even. I think almost everyone would be behind Paul Kuhr doing it. Plus Anders said one thing in the interview "Hes done some very good vocals in the past and since he proved he still has it and it fits this album". That again does not sound like a Paul Kuhr thing, almost sounds like a more old school dude that has not been in the limelight lately.
There is also the distance factor since Paul is from Chicago, and I know he also has some nasty back problems which makes playing shows hard on him, and since November's Doom is still his main gig I think he would focus any live potential there.
Not to be a nay-sayer but I really don't think it's Paul Kuhr.
I just hope it's not one of the old school growlers I don't care for like Martin van Drunen, that would suck.