Stock futures climb; personal income, Chicago PMI data due

Stock futures inched higher on the final trading day of the month, but the mood was still cautious with the market firmly focused on U.S. budget talks.

* Whole Foods Market Inc announced a special cash dividend of $2.00 per share. In expectation of higher dividend tax rates in 2013, companies have been shifting dividends or announcing special payouts to shareholders.

* After a close relationship for several years, Facebook Inc and Zynga Inc revised terms of a partnership agreement between the companies; under the new pact, Zynga will have limited ability to promote its site on Facebook. Zynga shares were down 6.9 percent at $2.43 in premarket trading. Facebook shares were up 0.8 percent at $27.55.

* Apple Inc's latest iPhone has received final clearance from Chinese regulators, paving the way for a December debut in a highly competitive market where the lack of a new model had severely eroded its share of product sales.

(Editing by Bernadette Baum)