OSDL has released a Q&A paper on the SCO Lawsuite:
In his paper, Rosen identifies some of the legal issues raised by the SCO Group's claims as they relate to Linux development and usage. He does not offer legal advice, but rather frames some of the key questions that companies should ask their own counsel about their use of Linux. He points out that SCO has a long way to go before it can assert broad intellectual property claims against an operating system that was written by thousands of open source programmers worldwide.The press release can be found here, and the actuall paper can be found here.
Also, in the latest (and possibly strangest yet) turn of events, SCO is apparently arguing that U.S. copyright law invalidates the GPL. Supposedly, since the copyright law only permits one backup copy for "fair use," and the GPL is copyright, then the GPL cannot grant permission to make more than one backup copy because it is superceeded by copyright law. Umm... More information can be found in the Inquirer article.