Sony Marshmallow Concept has a number MRA58K.Z1.2085

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Last week Sony launched the distribution of Marshmallow for Xperia Z3 and Z3 Compact beta test, and now the “M” received the first update.

 

At number MRA58K.Z1.2085, this update comes with several new features including an updated keyboard. The update is slow, so it will take time until you get your device. For those who are not aware, this beta test is limited then the following countries: Denmark, Sweden, Norway, Finland, Iceland, Estonia, Latvia, Lithuania, United Kingdom, Ireland and Germany.

Source: GSMARENA