Soooooo.......

Cinematic mode improvement: marginal but noticeable. One thing I noticed is that contrast seemed to be better and the screen did not seem as pixelated. Medium screen refresh rate being at 120hz didn't make a huge impact, but I tried it on Fallout 4 and it could be better with other games/apps.

3D blurays: untested

Tracking improvement: Here is where I noticed the most significant difference. I have never had a huge problem with my tracking. Job simulator and Brookhaven experiment my hands would pulsate back and forth a 1/2 inch to an inch, but usually didn't go flying around the room except the odd occasion. The tracking is significantly improved to the extent that I noticed immediately. It is still not perfect, but it is considerably better. You will still get a very small amount of pulsing, but it is a much smaller range and seems to only pulse back and forth a very small distance once or twice and then stops. Before I would just sit and watch my hands float back and forth the whole time. I could actually use my sights in Brookhaven without them shifting around on me.

Drift: I know they claim they did not address this in the update, but my drift seemed significantly better. I used to do all the tricks, turn on the HMD on a flat surface, leave it there for a couple minutes, etc.... I never found drift to be a huge problem before, but enough that I really feel like I notice an improvement with the update.

Overall fantastic update. Looking forward to the Aim with renewed enthusiasm with this tracking fix.