The standard maximum insurance limits for both FDIC and NCUA-insured accounts will remain $250,000 for at least until December 31st, 2013. Previously, it was temporarily increased from $100,000 to $250,000 only until December 31st, 2009. The extension was included as part of the Helping Families Save Their Homes Act, which was signed into law on May 20th. I wish it was made permanent, but I suppose this is better than nothing.
Here is the media release from the NCUA. Here is the FDIC fact sheet outlining the new changes. FDIC is for participating banks, and NCUA is for participating credit unions.
You may actually have more than $250,000 of coverage, depending on how you have titled your accounts and where you hold multiple accounts. Here are the official online calculators: