The value of each personal and dependency exemption, available to most taxpayers, will be $3,400, up $100 from 2006.

The new standard deduction will be $10,700 for married couples filing a joint return (up $400), $5,350 for singles and married individuals filing separately (up $200) and $7,850 for heads of household (up $300). Nearly two out of three taxpayers take the standard deduction, rather than itemizing deductions, such as mortgage interest, charitable contributions and state and local taxes.

Here is the link to the complete list of changes (warning: PDF file)
http://www.irs.gov/pub/irs-drop/rp-06-53.pdf