As mentioned in this post, it's unclear what the "latest edition" of the FIFA Rankings actually means. At the time of the official announcement the most recent edition was the April release.
This is how the seeding will look using the April 2011 ranking.
Pot 1: Central African Republic, Congo DR, Sierra Leone, Congo, Rwanda, Kenya, Ethiopia, Zimbabwe, Guinea-Bissau, Madagascar, Namibia, Equatorial Guinea
Pot 2: Chad, Burundi, Swaziland, Liberia, Lesotho, Eritrea, Somalia, Comoros, Mauritius, Djibouti, Seychelles, Sao Tome e Principe
Pot 1: Ghana, Côte d'Ivoire, Egypt, Nigeria, South Africa, Algeria, Burkina Faso, Cameroon, Senegal, Libya
Pot 2: Gabon, Tunisia, Guinea, Botswana, Mali, Morocco, Malawi, Cape Verde Islands, Benin, Uganda
Pot 3: Zambia, Mozambique, Niger, Gambia, Sudan, Angola, Togo, Tanzania
It remains to be seen how FIFA/CAF will handle the 12 winners from the preliminary round. They could make a pot with 12 teams or choose the pairs involving the top four teams from the first pot of the preliminary round (Central African Republic, Congo DR, Sierra Leone and Congo).
Remember only the group winner goes to the next stage - a play-off against another group winner. Just imagine a group with Ghana, Tunisia, Zambia and a team from the preliminary stage...