A couple of days ago it was reported that Galaxy S5 devices in South Korea has begun receiving Android 6.0.1, now owners of the device in Trinidad & Tobago have started receiving the update. This news marks the beginning of the international rollout of Marshmallow for the Galaxy S5.
The new update going out to Galaxy S5 (SM-G900M) devices in Trinidad & Tobago will be delivered over-the-air (OTA) and measures in at a hefty 1.47GB. The main features in Marshmallow include performance improvements, security enhancements and Doze which conserves battery life when the phone isn't being used.
The Marshmallow update arrived on the Galaxy S6 family of devices last month. Two weeks after being released to users in South Korea, Samsung began a worldwide deployment of the update to S6 devices.
It's not known how long it will take other parts of the world to receive the update, but it's unlikely that it would take too much longer given that Marshmallow has been out five months already and Android N - the codename for the successor to Marshmallow - has a public Developer Preview that is already receiving updates.