Philippe -- The data to answer your question is one the web. Since the new list of soft-dotted characters appears in the latest data file, and can be compared with previous files to see what has changed, you could try looking at the difference between this:
http://www.unicode.org/Public/4.0-Update/PropList-4.0.0.txt and this: http://www.unicode.org/Public/4.0-Update1/PropList-4.0.1d5b.txt Rick
