yup, I’m sure. 
dev-rendering is no longer being directly developed in because we’ve branched and that has become 4.23. We have a sub-stream of 4.22 where features are still being developed and tested before those changes are pushed up to 4.22 preview builds so some of the changes just may not be there yet for a binary build from the launcher. All the work being done there will make it’s way back to dev-rendering soon though.
also, the binary release for Preview 1 may have been created before rtgi or other features were added so next preview you will see a different set ofthings added.
also, rtgi and translucency are disabled by default right now. Use the cvars (when they are there to turn them on).