d2x-rebirth (0.58.1-1) unstable; urgency=low

  AddOns now use filename extension ".dxa". Old AddOns will not work
  anymore. You can either re-download them or simply rename them
  from "*.zip" to "*.dxa".

 -- Dmitry Smirnov <onlyjob@debian.org>  Sun, 04 Aug 2013 05:35:23 +1000
