Roger Dingledine:
I just released 0.2.4.17-rc. Hopefully there will be debs of it soon.
For those in a hurry, automatically built packages are available by adding the following in your sources.list:
deb http://deb.torproject.org/torproject.org/ tor-nightly-0.2.4.x-wheezy main
You can replace wheezy by squeeze or sid for Debian; or by lucid, oneiric, precise, quantal or raring for Ubuntu.