Not been reported yet, But 1 month ago to this day 150275 made its debut for the class on the Tyne Valley Line, Albeit not in passenger service.
It was running with 158752 on 5Z58 to Kilmarnock for refurb into Arriva's new interior and I wouldn't be surprised if the new livery is put on too.
info from RailUKForums and Realtimetrains
http://www.realtimetrains.co.uk/train/K9...2/advanced
RE: Northern (Arriva Rail North)
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