support is not scheduled. It would imply problems with the GPL
license (RAR3 features a PPM based compression algorithm developed
by Dmitry Shkarin plus some code by Eugeny Roshal).
If you need RAR3 support, check ftp.rarlabs.com
for the original unrar source code and extract the needed code
Windows developers may have a look at Sebastian Schuberth's "arch::ifstream"
library (requires the unrar.dll).
YOU added RAR3 support and would like to share
it with the 2000 monthly visitors of this page, so please let
(12/2005): valuable hint by Jordi Burguet Castell: "Incidentally,
I could get the source from ftp://ftp.rarlabs.com/rar/unrarsrc-3.5.4.tar.gz
and easily compiled it with "make -f makefile.unix" as explained
there (my system is a Debian unstable i386). Now I can finally
unrar some rar3 files I had, which is what I really needed! Probably
it is evident, but I thought it wasn't going to work.".
(05/2011): there is a new open source implementation (Objective-C) of RAR v3 (decompression only) available. Read the Slashdot announcement "Unarchiver Provides LGPL RARv3 Extraction Tool" and visit The Unarchiver homepage for details.