So between yesterday and today I packaged the new upstream version of libtorrent/rtorrent 0.12.3 and 0.8.3 as beta. I still need to do some testing on the packages and maybe change libtorrent from OpenSSL to TLS.
Anyway, in the meantime you can grab the binaries (only 386) and sources from my debian-playground:
(there may be new beta versions at the time you read this so please check as well the parent directory)
Or my repo:
deb http://reprepro.deb.rivco.info/ experimental main
Hopefully they'll be available soon from the Debian Archive, just need to check some stuff before that. Anyway, they're fully working right now.