note IITSEC 2021

conferences/IITSEC2021/README.md

@@ -18,7 +18,7 @@ This tutorial is a "DIS 101" introduction for software implementers and an intro
 Motivation: note that DIS can be used for connecting all manner of simulations, namely Live Virtual Constructive LVC, is the necessary path for connecting to Command and Control (C2) systems.  Establishing such connections between traditionally separate domains is central to conference theme,
 "Innovating and Accelerating Training: Adapting to an Unexpected Future!"
 
-This tutorial was well received at IITSEC 2019 and Virtual IITSEC 2020.
+This tutorial is steadily evolving, and was well received at IITSEC 2019, Virtual IITSEC 2020 and IITSEC 2021.
 * <a href="https://www.web3d.org/event/iitsec-2019-tutorial-distributed-interactive-simulation-dis-101" target="_blank">Web3D Consortium Announcement</a>
 * <a href="https://twitter.com/Web3DConsortium/status/1201910039511851008" target="_blank">Twitter thread</a> and <a href="IITSEC2019Dis101TutorialRoom.jpg">photo</a>