Hi. I recently read some very in depth reviews regarding the latest OS, 10.12. Since my main browser is Chrome, I use Android and (so far) I have no particular interest in music subscription, new photos features and Siri (I'm Portuguese), I don't see a single useful feature that is compelling enough for me to update. Don't get me wrong, it's not like I don't know how many advantages Safari has, or how superior iOS and the latest iPhones are, or what is coming with the latest file-system: Safari is more responsive, has better features that integrate really well with the OS and provides battery life. All of this while also looking better. BUT: Chrome is compatible with everything (Facebook Messenger web calls!), has better adblock plus support, Chromecast and is cross platform; For me, despite having a rooted Android with adaway and being familiar with apps like the xposed framework, iOS is now superior on any single relevant metric and it integrates better with OS X, making OS X even better if you have an iPhone. BUT: My Android device does what I need, at this time. I bought a (then, 2012) 300€ phone for 100€ 4 years ago (huge promotion), that is now unlocked with a great plan. With Adaway and updated google play services, it is good enough, still. The new filesystem will take at least another year in order to be ready, and most likely will be available for El Cap SSD users, specially due to the number of machines that can't be updated to Sierra. So, there's not a single feature that is there waiting for me. And even if Sierra is blazingly fast and provides a lot of low level improvements from version 10.12.0, 10.11.6 is really fast and rock solid (pun) on my Sandy Bridge Macbook Air. Apple is really focus on the Mac users that are also iOS users, and that makes all the sense in the world. It's not like they are removing features to the rest of (admittedly fewer and fewer) us, Mac + Android users. Now, what about Google providing decent features to desktop platforms? Anyway, that's another conversation. I think that IF I update to Sierra, it will be almost 1 year from now, due to security. What about you?