Here are the release note for Version 2.6c. As always all versions I am able to build myself, that is DOS, Aix, Solaris are made available at the same time.
Sources are also available for the other platforms.
This message goes to all users who are registered for the DOS program. Unix users will receive an additional short message giving them the location of the new program binaries for their platform. This is only a minor version release, not a full major change. It implements a number of extra features requested by users. Do not know why this has not been reported, but recent versions had an incorrect ndx2html program.