Question about AMD Fx-8350

FD8350FRHKHBX = new stock with wraith cooler
FD8350FRHKBOX = old stock with old cooler

So digitec still sells the old stock from AMD?

The 8370, 8350 and 6350 (am3+ socket) are now sold with the wraith cooler. Source: http://www.amd.com/en-us...

No, I think the Wraith is only included from the 8370 onwards. (According to the test report link below) It is worth paying attention to this according to the test setup, the temperature is on average 12° lower, as is the speed of the fan (less noise).
http://www.tomshardware.de/amd-wraith...
The Thermalright Macho costs an extra 60 for retrofitting.