Xiaomi's Android One smartphone - Mi A1 - has started receiving a new update. Going by screenshots shared by users over at XDA, the update weighs in at around 465MB in most cases, although for some, size is over 1GB.
It contains the November security patch, but not Android Oreo.
Sadly, there's no clarity on exactly what other new features or improvements the update contains and we don't even know what the extra content of the larger update package are.
If it's android one certified then all updates are handled by google except for major android versions.
The lineage OS does not include Google apps, which could be another reason for difference in size.
Just to let you know, the software updates are being handled by Xiaomi and not Google in case of Mi A1. So, I guess, bug fixes etc. are being done by Xiaomi, and the ROM is so big inspite of being not MIUI.