There’s a rumor flying around that Abu-Deraa, sort of the Mahdi Army’s version of Zarqawi, has been killed. Roads to Iraq has something of a report. It can’t be considered anything but a rumor at this point—Islamemo isn’t a very reliable source.
Treasure of Baghdad has an excellent backgrounder on Abu Deraa if you’re interested in more information.
Hat tip: Hot Air via Memeorandum.