See my previous post about the work permit.
I can't quite explain why the FIFA ranking averages published by the FA are one month behind. When the FA release their next ranking of averages, three countries will break in the top 70.
So if you're looking for a player from Uzbekistan, Cape Verde Islands or Albania this would be a good time to apply for a work permit.
In September, Burkina Faso and Belarus will drop out of the top 70.