Yes, it will finally be opened on 25 July, and by a very important person.
The Gocek Tunnel is due to open on 25 July. The grand opening will be made by no other than the Turkish Prime Minister Recep Tayyip Erdogan.
The toll charges will be:
Car + passengers 2.5YTL
Truck with single axle 5.00YTL
Buses & trucks with multiple axles 7.5YTL.