TL;DR: There is improvement, but your mileage may vary.
Going from v415 driver to v465 driver ---->
+ ~39% in Wild Life
+ ~5% in Sling shot extreme OGL ES [+ ~16.5% GPU OC]
+ ~8% in Sling shot extreme Vulcan
Sling Shot Extreme
-- OpenGL ES --
v415: 5370
v464: 5636
v464 (unlimited): 6280
v464 (OC): 6357
v472: 5611
v490: 5600
-- Vulcan --
1.1.87 (i think): 5084
1.1.128: 5471
Wild Life (Vulcan only)
1.1.87 (i think): (1422pts 8.50fps (unlimited 1225pts 7.30fps)
1.1.128: 1973 11.80fps (unlimited:1952 11.70fps)
__Additional notes:__
- Assume else stated: MCD kernel, LOS 17.1, SDM 845
- Benchmarked with 3dmark
- OC = GPU overclocked to 842Mhz (base is 710Mhz)
- *v472/v490 are test versions*
- Physics score is within margin of error regardless of driver version, but ~100 pts lower on v472/v490