The government has pre-published changes to the regulations, to change the age of dependants back to under 22 years and to eliminate conditional permanent residence.
There is a 30 day comment period for both proposals.
Conditional permanent residence:
If approved, the regulatory repeal is anticipated to come into force in spring 2017.
Age of dependants:
The notice says that if approved, the changes "would be anticipated to come into force in fall 2017."