In a tweet yesterday from a usual reliable evleaks, Evan Bass, has confirmed almost all main specifications for the anticipating Samsung Galaxy S8+ smartphone. The tweets reads below:

Samsung Galaxy S8+ spec sheet. Impress your friends, confound your enemies...with knowledge.

The spec sheet reveals
A 6.2-inch QHD+ Super AMOLED display (or 6.1-inch if you account for the rounded corners)
64GB internal memory
4GB of RAM.
12MP Dual Pixel main camera, 8MP front shooter,
4G LTE capable,
IP68 certified
Secured by Knox.

Other features are:
Supports iris scanner
Supports Samsung Pay
Wireless charging.
Earphones tuned by AKG (Harman).

One of the missing key spec about this device is the chipset and the battery capacity.
As earlier reported, Galaxy S8 and S8+ could be officially announced on March 29, and will be launched several weeks later, on April 21.

http://www.tellforceblog.com/2017/02/leaked-specs-of-samsung-galaxy-s8.html

IPhone8 will come out soon too... Tho no specific date but according to their email, they will launch it earlier than their expected date..