The Android 6.0 Marshmallow (Android M) is expected to be rolled out after the Google Nexus 2015 smartphones are released. Hence, Samsung is currently rolling out Android 5.1.1 Lollipop update to its recent flagships.
Android 5.1.1 Lollipop Update
Samsung Galaxy S6 and S6 Edge
According to Yibada, the Android 5.1.1 Lollipop has already been released by T-Mobile and U.S. Cellular in the U.S. for the Galaxy S6 and S6 Edge users. However, other carriers like AT&T, Verizon and Sprint are yet to release Android 5.1.1 Lollipop for their S6 and S6 Edge users.
The arrival of Android 6.0 Marshmallow is getting closer. Therefore, rumors are suggesting that both handsets may directly receive the Android M update by skipping the Android 5.1 and Android 5.1.1 Lollipop. Both the flagships were released with Android 5.0.2 Lollipop in April this year.
Samsung Galaxy Note 4 and Galaxy Note Edge
The Android 5.1.1 Lollipop along with Stagefright update has already been made available for Galaxy Note 4 users on Sprint. Verizon Wireless users can flash and install the Android 5.1.1 Lollipop on their Note 4 devices manually from Android XDA. A new report from Sam Mobile has revealed the update along with several critical fixes has arrived for users in Poland.
Even though Stagefright update has been released by Verizon Wireless and T-Mobile for Note Edge users, the Android 5.1.1 Lollipop has not been made available yet. Rogers, a Canadian carrier had promised to roll out the Android 5.1.1 Lollipop for Note Edge users in this month, but its subscribers are still waiting to receive the update.
Samsung Galaxy S5
Galaxy S5 users on T-Mobile have received Android 5.1.1 and Stagefright fix updates. Apart from T-Mobile, no other carriers in the U.S. have released Android 5.1.1 Lollipop for Galaxy S5 owners.
Android 6.0 Marshmallow Update
According to GSM Arena, several Galaxy devices are confirmed to receive the update in the near future. The list includes Galaxy S series smartphones like the Galaxy S6 Edge+, Galaxy S6, S6 Edge, and S6 Duos. The Note series phablets that are likely to receive Android M include Galaxy Note 5, Note 4 and Note Edge.
The Galaxy Alpha and the Galaxy Tab A are also confirmed to receive Android 6.0 Marshmallow. Tech Times claimed that some other Samsung smartphones like the Galaxy S5 will also receive the update at some point.