Samsung Electronics seems to be under pressure to release Google's latest software Android 6.0 Marshmallow to its high-end devices if a latest report is to be believed. The firmware beta version for the Galaxy S6 is said to be ready for testing.

The Android 6.0 Marshmallow OTA (over the air) update is expected to be rolled out to the Samsung Galaxy S6 by the end of this year before eventually released to the Galaxy S5 and other devices from Galaxy series. But it may be noted that Samsung is yet to reveal the release schedule of the firmware to its devices.

According to a report by PC-Tablet, "beta version of Android 6.0 build for Galaxy S6 is already ready" but it is still not known when it will be released for testing. 

Samsung is tight-lipped on Marshmallow update for its devices but T-Mobile has claimed on its support page that Galaxy Note 4, Galaxy Note 5, Galaxy Note Edge, Galaxy S5, Galaxy S6, Galaxy S6 edge, Galaxy S6 edge+ and Galaxy Tab S2 will get Google's latest firmware.

Meanwhile, GSM Arena has reported that a total of nine Samsung devices will receive the update and they are -- Samsung Galaxy S5, Samsung Galaxy Note 4, Samsung Galaxy Alpha, Samsung Galaxy A8, Samsung Galaxy A7, Samsung Galaxy S6, Samsung Galaxy S6 edge, Samsung Galaxy S6 edge+ and Samsung Galaxy Note 5. 

It may be recalled that most Samsung devices received Android Lollipop update late, disappointing its fans around the world. So, an early update of Android 6.0 Marshmallow will come as a pleasant surprise.