It will be online at some point, probably. The project is now digital based, so conversion to online should be relatively easy. (Although funding for online projects like this is very problematic. Government grant agencies love to fund the research, but don’t look favorably on maintenance funds to keep online projects alive.)
This is just one of several medieval Latin dictionary projects that are underway, different ones for various areas of Europe. Medieval Latin, like any language, had its regional dialects. This is just the British version, the longest running of the projects and first to be completed.