Update README.md

README.md

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 # UA-for-Industrial-Joining-Technologies
 The purpose of the IJT group is to define data models and data access standards for various joining techniques such as Tightening, Gluing, Riveting, Flow Drill Fastening, etc.
 
-OPC_UA_Servers\Release1\IJT_OPC_UA_Server_Simulator.zip is the OPC UA Server Simulation based on OPC 40451-1 UA CS for Tightening Systems 1.00. 
+OPC UA Server Simulation based on OPC 40451-1 UA CS for Tightening Systems 1.00.0:
+OPC_UA_Servers\**Release1**\**IJT_OPC_UA_Server_Simulator.zip** 
+
+OPC_UA_Servers\**Release2**\**OPC_UA_IJT_Server_Simulator** is the OPC UA Server Simulation based on the following specifications:
+OPC 40450-1 UA CS for Joining Systems 1.00.0 RC.
+OPC 40451-1 UA CS for Tightening Systems 2.00.0 RC.
+