Google announced Wednesday that it is rolling out an important new feature alongside a general update to the Android Market service. AT&T Direct Carrier Billing is now available to AT&T customers with Android devices. The service allows users to link their Android Market accounts with their AT&T service accounts, thus allowing app purchases to be billed each month as part of their monthly service invoices from AT&T. Google rolled out carrier billing for T-Mobile subscribers earlier this month, and no plans to bring the service to Verizon Wireless or Sprint customers have been announced. Google did say, however, that it will “continue to partner with more carriers to offer carrier billing options for their subscribers.”