As you pointed out, the parents of critically ill children program was extended in budget 2017, and further announcements are being made about it now. The EI family caregiver benefit, which is the new name for the program, will provide benefits for families, as you mentioned, for parents but also other family members. It is being extended to 35 weeks. It will allow not only parents, but also aunts, uncles, grandparents, and other people to share the benefit during the benefit period and create some flexibility, so that not only parents but families are supported to look after children, if they need to.
On November 9th, 2017. See this statement in context.