Now that Google's 2015 Nexus 5X and Nexus 6P have hit the market and the Nexus line of smartphones has begun receiving Android 6.0 Marshmallow, or Android M, OTA updates, people want to know when their Android smartphones will get the upgrade.

LG G4 owners in the U.S. should take notice, because across the Pacific in South Korea, the Android 6.0 Marshmallow update began an OTA rollout to several variants of the LG G4 on Wednesday. Perhaps the U.S. is next in line for the Android M update, or perhaps not. In any case, it's a sign that LG is working with Google to win the update race.

For Korean LG G4 handsets, the news of the Android 6.0 Marshmallow rollout couldn't be more official. It comes from LG Korea's own announcement (via Phone Arena), which detailed that the OTA rollout would be hitting the following LG G4 model numbers: LG-F500K, LG-F500L, and LG-F500S.

LG has certainly been busy trying to get Android M to its 2015 flagship handset as soon as possible. The official Korea-wide OTA update rollout comes just a month after reports that some LG G4 users in Poland were receiving the Android M update.

Limited market tests for updates are not uncommon in the early days of the update process, and tend to only signify that the testing process for a new Android operating system is well underway.

But apparently things went smoothly in Poland, since LG was confident enough to push the update out in its home turf, in what is the first significant Android M update rollout to happen to a non-Nexus handset released before Google unveiled its 2015 Nexus flagships.

While not a total system-wide facelift, like the Android 5.0 Lollipop update, Android 6.0 Marshmallow comes with several bug fixes and improvements under the hood.

The Android M update includes the battery-saving idling "Doze" mode, increased control over individual app permissions, and the all-encompassing context-based Google Now on Tap. It also introduces system-native support for fingerprint scanners. For LG's particular software contributions, the update will change the name of the LG apps LG Q+ and LG Bridge to LG Memo Capture+ and LG AirDrive.