AT&T may be indicating that its iPhone exclusivity deal with Apple is nearing its end. In a recent 10Q filing, AT&T added new language citing the end of exclusivity agreements for a “number of attractive handsets.” The Wall Street Journal, citing CLSA’s Steven Fox, notes that the language was not in the company’s prior 10Q. In addition, AT&T also said that it does not expect any such exclusivity terminations to…