In the UI you have the possibility to enter an information text for the student. But this text is never displayed. In org.olat.course.nodes.ta.TaskController I found that taskText is put to my Content, but myContent is reinitialised later in the constructor. Both templates (taskChoose.html and taskAssigned.html) include a variable taskText.
In this case I would suggest to reorder the initialisation of the velocity-containers. There will be a problem with the method pushTaskToVC() because there is no parameter for taskText.