Five stories have been shortlisted for the 2013 Caine Prize – four by Nigerian authors, and one by a Sierra Leonean based in the US.
Copies of the story are available to read here.
Should be enjoyable!
short stories
2010 Caine Prize shortlisted stories available online
For those interested in such matters, and unable to wait for the full collection in book 
form, do take a look at the five shortlisted stories for the 2010 Caine Prize.
Actually the Caine Prize website generally is full of information relating to upcoming and contemporary African literature.
Accra books and things 