I've got tickets to go and see them on Sunday. Really looking forward to it.
The Plastic Ono Band was a conceptual band created by John and Yoko - so I still see it as the Plastic Ono Band. The band was whoever was in it at the time (in fact John once argued that Wings was "almost as conceptual" a band as the POB as it was basically whoever was backing Paul at the time).
There was (of course) a Yoko Ono and The Plastic Ono Band album released at the same time as John Lennon and The Plastic Ono Band, with the band backing her on her music (and of course there are plenty of Yoko led B-sides).
I still see it as the POB and think John would have supported it - but hey that's just my view!