AT&T has released a document that appears to be corrupted or not properly formatted, making it impossible to extract any meaningful information from the content provided. The text contains a mix of special characters, binary data, and fragmented pieces of information that do not form a coherent narrative or provide clear details about any specific event involving the company. As such, no summary can be generated from the given announcement text.

AT&T has released a document that appears to be corrupted or not properly formatted, making it impossible to extract any meaningful information from the content provided. The text contains a mix of special characters, binary data, and fragmented pieces of information that do not form a coherent narrative or provide clear details about any specific event involving the company. As such, no summary can be generated from the given announcement text.