I think they have a decent rotation of songs. When they headline, it seems that they add/subtract 3 or 4 different songs from the previous tour, which I think is pretty cool of them.
For a shorter set like this one I'm expecting/hoping for 5 songs. Probably
GOP
Drapery Falls
TGC
Deliverance
Demon of the Fall
or maybe they'll surprise us with something a little different, but I'd still be happy with those.
On a tour like this they're trying to appeal to a larger fan base, so don't anticipate any unexpected tunes that would appeal to us Opeth obsessed fans. For example, I'm not expection UTM or When, but anything is possible. We'll find out soon enough
Serenity Painted Death would be awesome. I've still yet to see that one live.