Sorry to be so blunt, but welcome to the world of ATC.....
As a very old, experienced controller was once heard to say, "Never let the truth stand in the way of a good rumour!"
The only advice that I can offer is wait for something in writing to turn up. Then wait for that to be superceded by further advice in writing (Sorry, that's being unkind). If you have received notice of a course number (or date), then until you get WRITTEN advice saying otherwise, don't listen to rumours.
The Rumour Mill in ATC is a great thing, especially when you hear something about yourself sometimes. Like dates of when TC moves to Swanwick..........(unkind again, sorry!)
All the best.