Nope you still can not rearrange your notebooks simple.
I did found a work around but it needs some work, you need to number your note books (see below)
Automatically they do not arrange in the right order to make the notebooks arrange in the right order you first have to create a notebook stack (drag them on top of each other) and them drag them one by one out of the stack (drag them out of the stack on top of the main folder "Notebooks".
When you have done that with all notebooks they are arranged in the right order.
Success, lame they did not fix this yet