Is it really the same (really asking)?? Sometimes there are subtle protocol changes, when something is standardized -- and as much I understand, HTTP/2 took a while ...
the initial http 2.0 draft was just a copy of spdy (in nov 2012). There have been changes to 2.0, so they aren't exactly the same.. but http 2.0 is meant to completely replace spdy.
Any of the servers/clients that support spdy currently will eventually make the minor changes, and call it http 2.0.
