Turkish Volleyball Federation shared a photo via its instagram account and it's said that they have met up with press before the European Champhionship.
From what I have seen there are 12 people on the photo.
They are listed as:
Setters: Naz, Gamze
Outside Hitters: Gözde, Güldeniz, Neriman
Opposite Hitters: Polen, Meryem
Middle Blockers: Eda, Bahar, Kübra
Liberos: Simge, Merve
If that's the case as a final roster, Neslihan, Gizem Örge and Hande won't make it to the champhionship. It's said that Neslihan has got injury with related to her shoulder,but what about Gizem Örge?