The 'TV Software Update' tile on the homescreen now says that they temporarily halted the Marshmallow update because of technical issues and that they will miss their originaly promised delivery date (aka 22.02 - 08.03).
Funny enough the hard working devs at sony managed to find the time to install bloatware, ehem, Amazon Video. So yeah, enjoy, I guess.
Amazon video is nice, unless you can't remove.