I just had a question posed to me and cannot find my answer on FDIC's website. If a customer were to open a CD on December 15, 2009 and the CD was not going to mature until after the temporary coverage date of 12/31/09, would the CD be insured for the $250,000 or would it revert back to the $100,000 of coverage? My instinct tells me that it would revert to the $100,000, but I wanted others opinions and expertise.

According to FDIC it will revert back. I spoke to them right after the announcement.

The FDIC revised the 10/3/08 FIL on this topic to say "Insured institutions should inform depositors that the increase in coverage is temporary and effective only until December 31, 2009, particularly when opening new accounts and certificates of deposit maturing after that date."

http://www.fdic.gov/news/news/financial/2008/fil08102.html

At the bottom of the page, it has a date of 10/6/08. The FDIC must have changed the FIL yesterday.