The proposed pipeline safety act will apply to both existing and future proposed pipeline projects. While the NEB has already reviewed the proposed Keystone XL pipeline and has recommended a number of terms and conditions which the cabinet has adopted and has put in place regarding the construction of the pipeline, the additional requirements, including the absolute liability requirements, will apply to these pipelines that are already approved or already constructed and in the ground.
On March 24th, 2015. See this statement in context.