The 2011 rates carry over from 2010, but the income brackets are higher to account for inflation. The 2011 tax rate schedule can be found on page 273 of IRS Publication 17 (Your Federal Income Tax: Tax Guide 2011 For Individuals.
About the author
I have a Bachelor of Science in Accounting from Weber State University and I earned my Enrolled Agent certificate by taking a 2 day, 16 hour test given by the Internal Revenue Service. I am one of the few participants who passed the test the first time. This certificate means that I am licensed to practice before the Internal Revenue Service on your behalf.