Yea I guess it is impossible to find that out until tomorrow. Even looking at the all the specs, the S7 even has more Sensors

http://www.gsmarena.com/asus_zenfone_3_deluxe_zs570kl-8129.php

http://www.gsmarena.com/samsung_galaxy_s7-7821.php

Sighhhhhhh

"Support" is a very difficult matter for companies because there is a lot of money behind it. So if a company says their product "supports" something it means that it has been thoroughly tested and they can vouch for functionality. It does not mean that it doesn't work on anything else. But if google would come out and say "runs on every android device" they would be liable. They also cannot test every single device so they limit it. The list will grow over time and will also work on Samsung smartphones unless Samsung actively prevents it.

However for now I don't see a reason to support it on smartphones that also work with Gear VR. That platform is a lot more mature than Daydream and has a lot more content.

Mhmm you do make a really good point there. Its just odd to me that Samsung hasn't said anything about it since they generally have the lion's share of Android phone sales and one would think that Google would get them on board asap. Galaxy S devices supporting Day Dream would allow plenty of people to buy a Day Dream headsets but I suppose that is a reason why we may have not heard of anything. Hopefully things will be more clear tomorrow and its not some sort of a nonsense reason.

And it is true about the Gear VR and its maturity but I feel like in the long run, Day Dream will get more support.

Google knows very well that their platform is in direct competition with Samsung's Gear VR. Samsung will not be amused about it and there will have to be some negotiation before anything Daydream touches Samsung devices. 

It could be Gear VR supporting Daydream with a Samsung branded Daydream VR device. Or they'll just collect licensing for Daydream VR devices to work with their phones. Maybe even a full on cross connectivity with Samsung content delivered through Daydream.

We'll see what kind of deal they'll strike.

i agree that they'll eventually will make a deal to combine the android VR efforts, but for now and maybe for the next year or two Samsung will pretty certainly try to make good profits on their various VR related investments (Oculus partnership/investment; Gear VR-give away at S7 launch; building up Gear VR store and investing into various games/videos/content etc)

so what exactly does this do for me that Gear Vr can't do? why should I care?

honest question

For now it will do nothing for Gear VR consumers. It's meant for everyone else.

In the long run there will be a lot more headsets, likely surpassing the Gear VR ind quality and features and content that you can't get on Gear VR.