Holodeck B2B 1.1.1 is available on the download page.
Please be aware that Holodeck is still in development. The currently available version is not intended for use in production environments.
Holodeck is currently being developed further by Sander Fieten (co-chair of the OASIS ebXML tc) and Bram Bakx.
The new version will comply with the latest ebMS3 AS4 specifications.