With regards all the talk of a face lifted RS3, I don't really believe this, if anything they will do similar to the A1 which when face lifted picked up some similarities to the S1 in the front bumper late 2014. This would mean the A3 having an S3 style bumper with some fake air intakes & some new lights.
I just cannot see a facelift on a car that will be less than a year old. Also the 8P RS3 was launched at the end of campaign so again unlikely we will see a facelift RS3.
Internally they could upgrade the MMI which in fairness is long overdue!
I hope they also upgrade motor to new TT RS engine (around 400PS). Current motor is like old TT RS Plus from 2012, and car is compared by journalists with Golf R.
Golf R420, M2, A45, A45 S, are going to be several steps above if is not updated.
AUDI is very busy next year:
A3 Sportback g-tron
A4 (New gen)
S Q7 (4.0 TDI V8 428HP)
A5 (New gen)
A8 (New gen)