The class will cover more material, and use integrated video. There will also be more use of video for explaining how to use curvemeister, etc.
The big decision on format is whether to make it a free, self-paced class that you can take any time, with a forum group for general questions, or have it be a paid class that is offered every 2 months. The latter has the advantage that you will be part of a group, all taking the class at the same time, with an instructor who can answer questions along the way.