Is the TIFF specification being maintained and updated?
TIFF was developed by Aldus and Microsoft Corp, and the specification was owned by Aldus, which in turn merged with Adobe Systems, Incorporated. Consequently, Adobe Systems now holds the Copyright for the TIFF specification. The last major update of the specification, revision 6.0, dates back 1992. (No, this page is not outdated.) Adobe added a supplement in 1995, which is still marked ‘draft’. In 2002, Adobe absorbed a new-style JPEG-in-TIFF prepared externally in 1994 in a second supplement. While there have been rumours of a new TIFF specification under development within Adobe over the years, it does not appear to have a high priority. Nor is there any public process for specification revision. It is unclear whether a new specification version will be released by Adobe or not.