I notice base prices appear up a bit as well - quick calc shows a +4 by about 8%? - but not sure if the base price includes the same options as previous so may not be a direct comparison.
Brochure downloaded for the +4 is also different (rather I don't recognise it) - but when I look at it I still can't believe I'm fortunate to have one in the garage

Will just have to go and have a look (again)...