Sent superchips an email and they replied saying they would not be releasing a bluefin unit for the 170 apparently 'because it has a completely different engine management system than anything to date' according to them. They will only be offering the 'normal' fixed tuning on this car which gets you to 200bhp and 430NM or torque.
I also asked how this tuning is handled by DSG gearboxes given their apparent torque limitations compared with normal manuals and they replied saying in their tests the DSGs can 'easily' handle the power/torque that their remaps give, ie, they are saying 430NM is fine!
Yet there was rumours it could only handle 350NM (obviously rubbish! given that standard 170 TDIs can make more than this.