From here:
The House of Bishops of the Church of Nigeria (Anglican Communion) unanimously agree to the following statement regarding Lambeth 2020.
The House of Bishops of the Church of Nigeria reaffirm the Statement of GAFCON 2018 that the Archbishop of Canterbury should invite as full members to Lambeth 2020 the Bishops of the Province of the Anglican Church in North America and the Province of the Anglican Church in Brazil, and that he should not invite those Provinces that have endorsed by word or deed sexual practices that are in contradiction to the teaching of Scripture and Resolution 1.10 of the 1998 Lambeth Conference, unless they have repented of their actions and reversed their decisions.
In the event that this does not occur the Bishops of the Church of Nigeria (Anglican Communion) unanimously resolved that they will decline any invitation to attend Lambeth 2020 and all other meetings of the Instruments of the Communion.
It will be interesting to see Lord Willing we get that far.