After posting a news item earlier today suggesting Flogging Molly and The Mighty Mighty Bosstones were thought to be confirmed to play the European Deconstruction festival, Steffen from German site www.purerock.de emailed me to say that both bands are confirmed to play.
He added that in an interview with Flogging Molly, the band said both were set to play the whole tour, which will take place in May.
Thanks to Steffen for clarifying it.