Great News! I believe Easy are dropping their flights to SAW early next year so it is good to see a replacement carrier so soon and with the added benefits or TK's growing network from Ataturk for connecting traffic.
Any indications to what a/c they will use? I'm guessing it will be an A320/A321/738 although I may be wrong!
I also think a daily AYT flight would compliment this well and also be the return of a full service carrier on a loco/charter dominated route as I believe BA dropped the route a.couple of years ago.