It looks as through the EBSCO version will be available in January, with some overlap time between the versions. EBSCO has contracted with ABC Clio to continue to do indexing. EBSCO will also look into full text versions.
"Dear Librarians and Media Specialist,As you may know, EBSCO Publishing recently acquired Historical Abstracts (HA) and America: History & Life (AHL) from ABC–CLIO. We are excited to pass along the press release regarding this announcement. We will be in contact in the coming weeks with specific information for current HL and AHL customers as well as with information for those non-customers who may be interested as the databases become available on EBSCOhost."