There is no info about the pricing as of now just the launch dates is confirmed will be launched on April 19 2017.
Samsung Galaxy S8 & S8+ comes with 5.8 inch and 6.2 inch QHD+ display with resolution of 1440*2960 pixel with Corning Gorilla Glass 5 protection on both the sides. It has same camera with 12 Mp resolution which was found on Samsung Galaxy S7 but now it can capture super slow motion videos with 2160p @ 60fps and 1080p at 120fps. It will come with new 8 MP front facing camera with Autofocus and Auto HDR. The Samsung Duo will be powered by Samsung Exynos 8895 or Snapdragon 835 depending on markets.It will come with 4GB RAM and 64GB on board storage , but in some markets they will launch one more variant with 128GB storage and 6 GB RAM. The memory can be expanded with microSD card upto 256 GB but in some countries you may get dual SIM variant with hybrid SIM solution.It will come with 4G LTE with speed upto 1 GBPS, Bluetooth 5.0, WiFi, GPS, Glonass etc.Now the Flagship will come with USB type C connectivity for charging with fast charging technology both wireless and wired.As per battery is concerned it will come with 3000mAh for S8 and 3500mAh for S8+.It will also come with IRIS Scanner which was last seen on Note 7 and also have fingerprint sensor at the back.It is also water and dust proof as seen on earlier Samsung Galaxy S7 with IP68 certified – dust/water proof over 1.5 meter and 30 minutes.It will come with Android 7.0 out of the box with Samsung Natural UX on top.