Update: The text of the letter, and the teams response, can be found in the scummvm-devel list archives
Today was a milestone for the ScummVM project, as we finally received the long-awaited for e-mail from LucasArts Legal regarding the project.
Thankfully, they do not yet appear to have a valid complaint. Their message requesting the removal of the site is based on the presumption that we are distributing LucasArts own engine on this site. Of course, ScummVM is a fully original work based equally on reverse engineering and original decoding work by many different people in the community, so this request doesn't really affect us.
We're safe for the moment, and will continue to work on bringing the wonderful classics of the LucasArts company to your computing devices for, hopefully, a long time to come!