So Rule 40(b) applies as a "temporary" rule. That means the 2012 rules apply to the 2016 convention, until permanent rules for the 2016 convention are adopted. The alternative would be the 2016 convention starting with no rules. Then how would anything be done?
Correct.
The temporary rules stay in place for 2016 until modified by the Committee.
I believe the next such meeting takes place in April.