The official page for To Appomattox is now up on the Internet Movie Database (IMDB). One of the go-to sites for information on films and television, IMDB gives mostly accurate information on upcoming productions. The link to the series can be found here.
UPDATE: The IMDB should not be considered “official,” per the words of some involved with the production. So, take any information presented on the page with a grain of salt. They do get it mixed up sometimes, for certain.