I can confirm you did see a red Astra OPC ... cause I was the one driving it! The Aero pack is not standard on the car. At this stage it looks like it will be offered as an accessory post launch.

Click here to enlarge Originally Posted by eddysdaman Click here to enlarge
I think I saw a Red OPC Astra on the road the other day with the 19s (not 20s) off Chapel St
Was going too quick to confirm/photo but definitely saw the front bar and the lack of the aero pack (additional rear wing)