You still have version 2023.2.5 on the Launcher. You can stick with that if you wish. If you wish to try the latest version of our “templates” such as USD Composer, you can download the latest version for 106 here at GitHub - NVIDIA-Omniverse/kit-app-template: Omniverse Kit App Template
It is very simple and easy to do. Just install Git and Git LFS before you start and follow the instructions.