Here is what the band posted on their website:

"Lots of new material are in progress. The last couple of months have been spent on creating new songs alongside our touring-activity. We have tons of ideas to pick from and will most likely spend the next few months on perfecting the best of this material. All the songs are meant for our next full-lenght album that most likely will be out in the beginning of next year".

Source:	sirenia.no
Band profile:	Sirenia