I don't have it either. I heard its rolling out in batches over a 2 week period.
The zip of both updates are available on multiple sites and can be flashed via stock recovery or TWRP. I wasn't getting the OTA so I did the main update last night via recovery and then immediately got the OTA for the minor update.
Overall I *think* the capacitive buttons are a tiny bit brighter, but it's still not much different.
- the phone feels like the same size as my Note 3, but has a slightly smaller screen. With a phone 8 months newer, it would have been nice to see some improvement here (not quite G3 level, but maybe something in between).
+ I'm glad there are capacitive buttons. On a smartphone where you use it in portrait 90% of the time (and the remaining time is watching videos where buttons aren't really used), I like having buttons always available in the same position and using the bottom bezel, which normally would be useless space. I can live with OSB (got used to it with my G2), but all things being equal, I do prefer physical or capacitive buttons.