So, to answer your first question, "what is the Narrative Lectionary?" It is a four year cycle of readings that has been imagined and managed by Luther Seminary in the USA. This is what the creators say about the motivation behind this four year old lectionary: "Though the Revised Common Lectionary has united the church in its reading of scripture and has given much-needed structure, it doesn’t present scripture -- especially the Old Testament -- in a way that helps people to become fluent in the first language of faith. The Narrative Lectionary is an attempt to take nine months to do just that."
Westminster has been using this lectionary all this year, but in December is introducing it in this far more comprehensive way across the congregation.