Samsung is up till now true to it promises of delivering security update every month. However, it is pretty hard to keep track which device is getting it and when. For Galaxy S6 and S6 edge+ is now receiving the update in India and Nordic countries.The update is likely to be below and 100MB. It is an OTA but if you are not getting the OTA update plus you own SM-G928F version of the Galaxy S6 edge+, you can even the get the complete firmware and download it manually.

A December security update will now roll out to Samsung Galaxy S6 and S6 edge+

Some US variants along with members of flagship family like Galaxy S6 edge and Note5, got a December update a couple weeks ago.

This time frame of the update varies from region to region, so if you don’t receive it anytime soon, you will be getting it later anyway.