In what seems to be a departure from normal software / firmware update pattern for Lumias, Microsoft is now roiling out Windows Phone 8.1 update 1 to Lumia 930 and no it is not for Lumia 930 under developers preview.
So, all Lumia 930 devices without dev preview should be receiving this update which takes the OS version to the latest Windows Phone 8.1 GDR1 version 8.10.14157.200, seen on dev preview devices. The update doesn’t bring Lumia Denim firmware though and still remains on Lumia Cyan.
Full update changelog:
Latest software release for Nokia Lumia 930 is Lumia Cyan (02061.00066.14353.31xxx)
- Improved stability & performance.
- Imaging enhancements.
- Enriched display performance.
- Cortana support added for UK and China.
- Start screen folders, customizable snooze for alarm clock and other usability improvements.