Your correct, please bare in mind most tuners will invest money where they want to see the most return. The software on the later DSG cars changed which means more R&D costs. I have been looking I to this for ages and been on at Revo for 15 months, have even offered my car as a demo. They will be looking into this but not a a priority as they have been honest about tuning the TTRS / RS3.
Not great for us but its swings and roundabouts I am afraid.
Down south Regal supply GIAC dsg code for newer cars but the regal customer service is very poor. I have contacted them numerous times and they have been useless. My friend had his 2010 car done with them and loves the GIAC dsg software but he had to travel to southampton, from London, three times before they managed to do the software successfully.
Yes i spoke to Kev at Revo and he said they were looking at getting this released this year sometime but he couldn't give me a date.