While not a complete list the following are some figures of interest:

401(k):  The maximum contribution in 2011 is $16,500.  For 2012 it will rise to $17,000.

Estate Tax Exemption:  The maximum in 2011 is $5,000,000.  For 2012 it will rise to $5,120,000.  The benefit may be short-lived as the $1,000,000 exemption under the previous law is set to return in 2013 unless there is Congressional action.

Annual Gift Tax Exclusion:  The limit of $13,000 in 2011 will remain unchanged in 2012.

Top Marginal Income Tax Bracket:  The 35% bracket remains the highest and will be applied to taxable income exceeding $388,350 for joint filers.

Standard Deduction:  The $11,600 figure for 2011 will rise to $11,900 in 2012 for joint filers.

Personal Exemption:  The $3,700 figure for 2011 will rise to $3,800 in 2012.

Additional highlights as well as a complete list of changes are available on the IRS website.