With the rollout of any new version of Android, it seems that there have been delays in the most recent versions.  When Android 5.0 (also known as Android L or Lollipop) came out, it didn't come to the latest models of Android devices until months after the initial rollout.  In fact, a lot of Samsung's devices, although they are quite new, are still waiting in line for the latest version of Lollipop, which is version 5.1.1.  Now that Android 6.0 (also known as Android M or Marshmallow) has recently been revealed, users of Samsung devices like the Galaxy S6, S5, S4, Note Edge, and Note 4 want to know when they will receive their Marshmallow update.

According to Tech Times, here the list of Samsung devices to receive Marshmallow is actually pretty extensive, including the Galaxy Note 5, the Galaxy S6 Edge +, Galaxy S6, Galaxy S6 Edge, S6 Duos, Note 4, Note 4 Duos, Note Edge, Galaxy Alpha, and the Galaxy Tab A. 

Samsung Galaxy S5 users might be quick to notice that their device was not on that list, and that goes for the S4.  Fortunately, Samsung's list is by no means complete, which means that there will be more devices added.  It really is only a matter of time, but it could be a lot of time, specifically for the S4. 

The good news is that the Galaxy S4 does have Android 5.0, but will it ever have Marshmallow?  That information is not yet known, nor is the exact release date on Samsung devices.  Some of these devices are still waiting on their Android 5.1.1 update, after all. 

According to Phone Arena, Samsung users should be expecting Marshmallow on those aforementioned Android devices by early 2016.  That does mean that they won't be getting any Marshmallow for the holiday season, but it could come.  Usually, the estimation is about one trimester after Google releases the source code to the manufacturers. 

There is a report on Android Origin saying that there is no doubt that Samsung will push out an Android M 6.0 update to the Galaxy Note 4 and Galaxy Note Edge once the official source code has been released. 

So what can be expected on Samsung devices that will receive this update?  Google's Marshmallow is planned to bring a whole bunch of improvements such as app permissions, memory usage tracking, power saving, auto backup, and even more. 

Right now, even though this Android M was unveiled at the Google I/O developer's conference, it still has yet to appear on any of the many Android devices that are out there.  Usually, they will appear first on the Nexus series, but this device has also yet to surface.  In fact, the name of their new devices isn't even known yet, though some predict it will be a 2015 version of the popular Nexus 5 and possibly a larger Plus-sized version as well.  Once those show up, it is a slow falling of dominos until the Marshmallow update comes to all eligible Android devices.