It clearly indicates that Lumia 830 and Lumia 735 are also set to receive latest Lumia Denim firmware update, in spite of shipping with early versions of Lumia Denim pre-installed. The Lumia Camera 5 will come to Lumia 830 with latest Lumia Denim update OTA only and that has also been confirmed by Microsoft.
Lumia Denim update brings goodies from both Windows Phone 8.1 update 1 and Lumia Denim Firmware update in one. Read all about Lumia Denim and Windows Phone 8.1 GDR1 changes at our dedicated page.
Thanks Nate & Gill for the tip. Cheers!!