A while back I went cover to cover through a couple of the early brochures and couldn't see any specific reference to maps in the AID for anything other than the Pro Nav.
Like you say, annoying when the Mk7.5 had it as standard straight from the get go, and most early Mk8 reviews and road tests seem to feature it.
My assumption is that it was meant to have it, but due to the litany of software issues they were having as the car went into production (and still are having to some extent), they left it loose when writing the press material.