I'm not quite sure why / how I just found myself on Vauxhall's website, but there I was and I checked the map updates!
It looks like 2014 Ampera's can have new 2017 maps for £149.
Opel | Opel | NAVI 950 IntelliLink EUR/RUS/TUR - Version 2017 | HERE
Can this really be true?!
Has anyone done it?