Can't see anything about this online or in the book but is the auto rear dimming mirror included as part of the vRS hatch spec?

Don't think so mate. Have you ordered yourself a hatch?

it is included along with the auto lights and wiper (not the whizzy bang auto headlights)

Which model you think, FL or MKIII. The FL has not been standard spec but in the MKIII vRS is standard. At least in Slovenia is so.

Yeah ordered myself a TDi vRS hatch, I just wondered as my bros mkii has one and he's said it's fairly handy

The vRS estate (mk3) I test drove had one and the dealer told me it was standard on the vRS, so I'll be a very unhappy camper if mine comes without one.

Standard in the UK.