With all the musicians scheduled to join Jorn on stage for his set, and given Jorn's long history, it's hard to imagine him not being one of the bands who will be doing a DVD. Furthermore, I am unaware of any live DVD in his back catalog (but certainly could be wrong). His last disc, "The Duke", was also released worldwide just a few months ago (earlier in some countries like Japan). I'm all thumbs up for a PP Jorn DVD.
My guess that band #2 which has signed up for the DVD shoot as of this moment is Mercenary. Vision Divine is also possible, but given that Mercenary has had more commercial success than Vision Divine to this point, one would think they have more resources and a bigger market for a DVD. Mercenary will also have a new disc out this fall (which has already received a big thumbs up from Glenn), so a DVD follow-up to "The Hours That Remain" buzz next spring would make sense.
It's hard to imagine Evergrey doing a live DVD (of essentially the same show nonetheless, but in the USA) better than they did overseas where they had all their resources available. How well would a PPUSA DVD sell overseas for them? All comes down to $$$, and I'm sure the label spent a pretty penny on their most recent DVD. Same situation for Epica.