I think the Revo, APR, GAIC and MRC software will be similar to how it is now. I doubt they'll be using a tuning box anyway.
Moving on to these companies that have a box for everything and anything like these Audi 8V S3 2.0 TSI 300 ECU Remap
Honestly you have to question how much r&d they put in when the best they come up with is 330hp. I know the highest hp map isn't always best but when MTM and ABT can get 370hp it does make you wonder.
DTUK can't say I know anything about them or know anyone with one of their maps and considering how long I've been around most the vag forums, personally I'll be sticking with one of the well known vag tuners especially with a £35k car.