My guess is it’s a slip up.
I reckon they’ve seen sales of FSD drop off, and want to get some more sales at half the price.
Ill be honest the one that interests me is being able to overtake without needing to disable and then re-enable autopilot ... whether that’s done by the car deciding to overtake or me.
Until FSD can cope with roundabouts, I don’t see the point of paying for full FSD in the UK unless you’re a YouTuber or need summon to get the car out of the garage or similar.