Courtesy of Mark Herrmann on his Drug and Device Law blog, here is an excellent summary and commentary on the new Federal Rule of Evidence 502 that was signed into law by the President a few days ago, and even has application in some manner to state court cases.
The following quote is from the introduction to the post:
This law creates a new evidence rule, Federal Rule of Evidence 502, limiting attorney-client privilege and work product waivers. It applies in "all proceedings commenced after" its enactment date and, "insofar as is just and practicable, in all proceedings pending" on that date.
This is must reading for all those who practice in the area of business litigation. Here is a short blurb I did on it last week.