Foremost: PATIENCE!
Secondly, imminent changes in the application form will reflect only changes which have already taken effect. Such as the removal of item 10 in the October 2016 version (regarding intent to reside).
Beyond that, but importantly, changes that will be made due to the implementation of the 3/5 rule will NOT be available online until much later, probably not until the day the changes actually take effect (or perhaps not even then, for a day or so . . . last time changes of this sort were made, the old form was no longer available as of the last day before the new requirements, and the new form did not become available until AFTER the day the new requirements took effect).
In particular, it is NOT likely the form or calculator for the 3/5 rule will be available until, at the soonest, the day the 3/5 rule actually takes effect. That will be a date to be announced, to be some time this fall. Many if not most Canadians consider fall to begin after Labour Day. More likely date for 3/5 rule coming into force is sometime in October or November.