1.5, 1.5 early access and 2.0 early access   
Hi people,  I'm a bit confused and while I did search for an answer through google and forums I couldn't find any definitive answer.   
On http://www.digitalcombatsimulator.com/en/downloads/world/  there are three downloads;    
I know the difference between 1.5 and 2.0; but what exactly is the difference between 1.5 and 1.5 early access / open beta?   They seem to have different installers for the same version of the sim; are they different somehow?