Now Android One Devices are getting Android 6.0 Marshmallow update through OTA . The OTA update is of 337.9 mb ( 338.1 in some models ) and will update your Android One device to Marshmallow .
Currently Indian Android One Smartphone Spice dream uno has received Android 6.0 Marshmallow update .
The update is rolling out in Phases , so you might not able to get the update !
(thanks to Saransh Vaid )
OTA Captured link -
Download Here ( Micromax A1 ) ( Thanks to Harshit Raghuvanshi )
Download Here ( Karbonn sparkle v )