Here's an email announcement from the Regolith Excavation Challenge:
Plans are coming together well for the 2009 Regolith Excavation Challenge, and we are planning to hold the challenge event on the weekend of August 15, 2009. The rules will remain very similar to the 2008 competition, with the exception that we plan to allow teams to utilize telerobotic operations. In this case, the definition of telerobotic operations will include some of the limitations consistent with operating a robotic system on the lunar surface from a control station on the earth. A formal announcement with information about the CA location, draft rules, and team registration is forthcoming.
At the moment the Challenge site has the above note, and also This site is offline temporarily while we make updates.
Hopefully when they make the updates they keep the earlier competition information online, too.