Every month on second Tuesday, Microsoft will release release patches and updates for its software and hardware lineups. Surface RT and Surface Pro devices were also getting these updates since launch and this month is an exception. There is no firmware update for both Surface RT and Surface Pro devices this month from Microsoft. I guess, Microsoft is working on delivering Windows 8.1 with fully optimized firmware for both these devices in October. When asked about the lack of updates this month, Microsoft commented the following to Neowin,
Windows and Surface are periodically updated with new features and improvements as they become available, and they will continue to receive updates as needed. Product updates for Surface RT and Surface Pro will become less frequent as the products mature. This is the natural cycle for all devices.
Are you waiting for Windows 8.1 update on your Surface device?