In message , at 13:36:20 on Fri, 26 May
2017, Basil Jet remarked:

The cover is lilac.

The only differences I've spotted are obeli added to various Waterloo
served stations, and Cambridge North. There is no indication that there
are hardly any trains serving both Cambridge North and Waterbeach,
which somewhat defeats the point of a map at all.

Are there any maps which indicate that sort of thing?

In practice, it doesn't matter much, because very few people will want
to take the train from one to the other.

--
Roland Perry