Three reasons for a late welcome party :
You can have a trial version now
The Help page is there and looks very helpfull
First Professional premium Course
1.The first release is two months ago but only now you can use a trial Version of V-Ray for Revit
Two Steps to download it :
1.Creat a chaosgroup.com Account .
"Download V-Ray for Revit trial using your account "
2.The Help page is there
3.First Professional premium course
Also we have the first premium and professional course for V-Ray for Revit :