This year, two tax publishers have already calculated the inflation adjusted tax brackets for 2015, which are handy for tax planning purposes. Notably, the annual gifting exclusion will remain at $14,000 for 2015.
Wolters Kluwer, CCH Projects Inflation-Adjusted Tax Brackets and Other Amounts for 2015
Bloomberg BNA has this handy 17 page pdf of the upcoming inflation adjustments for 2015.
Update: Tax Foundation has posted a very handy summary of the 2015 adjustments.
Update 2: IRS has just released its official announcement of the inflation adjusted changes for 2015
IRS Rev Proc 2014-61 with all of the details (22 page PDF)
Tax Guru - Ker$tetter Letter 