Sony UK Says Xperia Marshmallow Will Roll From 7 March

Whilst Android Marshmallow concept program for Sony devices is up and running, an official update is still in the works. According to @sonyxperiagb, an official representative of Sony in the United Kingdom, Marshmallow will be available to download for the Z5 on March 7, 2016. The waiting time is not overly long then!

source: xdadevelopers