This is one of the advantage of having Android One smartphone in your possession because you’ll be among the first to receive Android 7.0 Nougat.

Users of Android One devices across the world have started receiving Android 7.0 Nougat OTA updates from Google beginning with Cherry Mobile G1.
Other Android One devices that will be getting Android 7.0 OTA updates includes:-
1. Infinix Hot 2 X510
2. Cherry Mobile One
3. MyPhone Uno
4. Evercoss One X
5. Mito Impact
6. Spice Dream UNO
7. Nexian Journey One
8. Karbonn Sparkle V
9. Micromax Canvas A1
10. Symphony Roar A50
11. QMobile A1
12. Lava Pixel V1
13. Bq Aquaris A4.5
14. Cherry Mobile One G1
15. i-mobile IQ II
16. General Mobile 5 Plus
17. Y!Mobile Sharp 507SH.

Please make sure you completely unroot your device if you’ve rooted it before and also make sure that you are running stock recovery on your device otherwise you’ll be among the spectator of Android 7.0 Nougat installer.

The update will be OTA {over the air}, hence you should receive it any moment soon.

Those of you using Sony Xperia Z3+, Xperia Z4 Tablet, Xperia Z5, Xperia Z5 Compact, Xperia Z5 Premium, Xperia X, Xperia XA, Xperia XA Ultra and Xperia X Performance should expect the update soonest.