Also announced today, is Damien will have Icelandic support act: Jófríđur Ákadóttir.
I would also expect Damien to make an additional appearance at another venue during the festival, this is a feature of this bi-annual festival, where acts pop up for a gig, with almost no notice. If this happens i may catch it, as am in the city centre all day Friday/Saturday & Sunday, as i am going to many other events.
They usually post info on these pop up gigs on their twitter page:
https://mobile.twitter.com/SafeHarbourFest