The Secretary General, Canon Kenneth Kearon, writes:
The thoughts and prayers of many in the Anglican Communion are focused on Sudan at this time, as the people of Southern Sudan prepare for a referendum to decide their future. The referendum will take place on 9 January next, and all are invited to pray and to focus their concerns on that war-torn country at this time.
And the ACO has provided a page of background material.
Other useful pages:
Trinity Wall Street Sudan: Background on the Conflict by Rebecca Linder
Cif belief A momentous day for Sudan on 9 January by Graham Kings
Diocese of Salisbury Deadline for Sudan
Episcopal Church A Season of Prayer for Sudan
New York Times Peaceful Vote on Sudan Appears More Likely