Looks like I can not really use it just yet, need sign up and then be put into a waiting list. Is it true that Collaborate is on Python 2.7? Since everything i

Looks like I can not really use it just yet, need sign up and then be put into a waiting list. Is it true that Collaborate is on Python 2.7? Since everything is switching to 3.x these days it would be nice they can update Python version as well. This tool is built on top of ipython-notebook(jupyter) which supports 3.x officially already