Hey,HTTP/2 is the second version after HTTP1.1
Advantages of HTTP/2:
-Uses a single connection per server
-Delivers faster TLS performance
-Simplifies your web applications.
-Great for mixed Web pages.
-Supports greater security.
You probably won’t see a huge difference, but it should help pages to load faster and decrease server loads. Direct from the HTTPbis working group’s abstract:
"This specification describes an optimized expression of the semantics of the Hypertext Transfer Protocol (HTTP). HTTP/2 enables a more efficient use of network resources and a reduced perception of latency by introducing header field compression and allowing multiple concurrent exchanges on the same connection. It also introduces unsolicited push of representations from servers to clients.