Just noticed that Auto Express have done a 'first look' review of the diesel TT, which gets the new common rail 2.0 TDI 170 engine, also destined for the A3 :
http://www.autoexpress.co.uk/carreviews/firstdrives/221124/audi_tt.html
http://www.autoexpress.co.uk/carreviews/firstdrives/221124/audi_tt.html