Microsoft India has confirmed in a tweet that Lumia 1020 will start receiving Lumia Cyan update starting tomorrow.
@jills4824 The Cyan Update for #Lumia1020 will roll out starting tomorrow. Pls note that the updates are always released gradually. 🙂 ^MM
— Microsoft India (@MicrosoftIndia) August 7, 2014
Lumia 1520 along with Lumia 625, Lumia 925 and recently the Lumia 1320 has received the updates en masse now with exception of AT&T rolling it to Lumia 520.
Lumia Cyan brings goodies from both Windows Phone 8.1 and Lumia Cyan Firmware in one. You may like to read some of earlier posts for any help required and for getting tips and tutorials for Windows Phone 8.1 and Lumia Cyan
[Running Developers preview & BitLocker encryption, need a software rollback before updating to Lumia Cyan]
[Just updated to Windows Phone 8.1 (Lumia Cyan)? Here is your guide to Nirvana!!]
[Part 2 (Tips & Tutorials) : Just updated to Windows Phone 8.1 (Lumia Cyan)? Here is your guide to Nirvana!!]
For catching everything about Lumia Cyan and Windows Phone 8.1 which includes:- Full Changelog, Hands-on demo videos, Tips, Tutorial no better place than our dedicated Lumia Cyan and Windows Phone 8.1 page.
Thanks Bharti for the tip. Cheers!!