pay attention to the sentences

"The backlog reduction efforts of both Citizenship and Immigration Services, and the Department of Labor continue to result in very heavy demand for Employment-based numbers. It is anticipated that the amount of such cases will be sufficient to use all available numbers in many categories. As a result cut-off dates in the Employment Third preference category will apply to the China, India, and Philippines chargeabilities beginning in October, and it is possible that Mexico may be added to this list. In addition, it is anticipated that heavy demand will require the establishment of a Third preference cut-off date on a Worldwide basis by December.

The amount of Employment demand for applicants from China and India is also likely to result in the oversubcription of the Employment First and Second preference categories for those chargeability areas. The establishment of such cut-off dates is expected to occur no later than December."