[akanksha kumari]

When will denim update come to India in nokia Lumia 1320?

[Pete]

We don't know. It arrives when it arrives. You can try contacting your carrier, sometimes they know the dates for when they release updates. But mostly they don't, or won't say...

[dKp1977]

Only Microsoft, OEMs and carriers know. And probably god.

[Conan143]

When MS flips the switch ...just kidding !
Right now the update is rolling out to high end lumias( 830, 930, 1520) and as for low end lumia phones update has already rolled out in Q4 2k14.
So I think these models likely to get the update (920, 925, 1020, 1320) at the very end of roll out. This is just a speculation original scenario may differ.