According to the latest reports, Samsung just started a beta program for testers to try out Marshmallow on the Galaxy S6. This beta program kicked off in Samsung's home country of South Korea. The report indicates that the beta program is very limited in scope at this time. Only users of the Galaxy S6 and S6 Edge on Korea Telecom and LG U+ have been invited to participate in the test.
If you are one of the lucky folks under these conditions, you can download the Galaxy Care app from the Play Store or from Samsung’s Galaxy store. You will then get an OTA notification for the update within 24 hours after you sign up, and the Marshmallow beta program will be open through January 18.
This is both good and bad news. Obviously its good because it means Marshmallow is now in the testing phase of its evolution for the Galaxy S6 series. The bad news is that it will obviously still take some more time, and we won't see the update until late January at the earliest, and more likely it will come in February.
Please drop by our dedicated Samsung Galaxy S6 series forum for further discussion: Samsung Galaxy S6, S6 Edge and S6 Edge Plus | Android Forum at DroidForums.net
Source: SamMobile