Not quite so,
are the Turks sleeping on unmanned submarines?
There are several unmanned underwater vehicle programmes. Just do a search under Naval Programs thread to see something i have earlier posted.
Yet, there is still no works on an actual unmanned / crewless submarine apart from conceptual stage.
There is another multi-purpose midget submarine project that will have an unmanned variant both for ISR and ASuW duties on top of being unmanned test vehicle for future submarine components.
Havelsan / Aselsan works on a new kind of UUV of multiple sizes for sensor network, ISR duties.
Aselsan individually works on a torpedo tube launched UUV.
There are several very small UUV / ROVs, for anti-mine, scanning etc.
Tubitak has a group working on UUV, USV and integration of those. Data collection etc.