> My question is: Are there any plans to release a
> MacOSX version?

I know people have been able to compile HTTrack sources for OSX.  See this
FAQ:
<http://www.httrack.com/html/faq.html#QG5>

Also, there's a link on the download page to a project called Fink which is
meant to be HTTrack for OS-X however it looks out-of-date (only version 3.22
which is somewhat old):
<http://fink.sourceforge.net/pdb/package.php/httrack>