This phone seems to follow Samsung's trend where every other phone is a major upgrade/new design and the phone that follows the major release is simply a minor upgrade with similar hardware and some optimization of software.
As an android person and a Samsung owner I can say the phone looks good, the specs are good, it's absolutely gorgeous (in most of the colors), and it out performs IPhones. I will not however get it because it is not enough of an upgrade from my S8. Most of the software updates will probably start showing up on the galaxy 8 phones shortly after the release of the S9s.
I will say I love all the options to unlock it and the headphone jack is still there, with Android it's all about customization and the ability to fine tune your phone to be exactly what you want. That is why there are so many ways to unlock because Samsung isn't forcing you to conform to using one way to unlock they give you options.
I do hope they add a way to remap the Bixby button instead off just a way to turn it off and on. Also, my unpopular opinion is that the finger print scanner was just fine where it was.
I loved the jabs at Apple pointing out their flaws. I actually think it could push apple to do better which might make the next Iphone actually compete with Samsung.