That's the track which has got the highest probability of appearing as the one new to the series given it showed up in GT Sport code already last year in an update with the following conditions: daytime, morning, sunset, afternoon, noon, sunrise and twilight. They must be quite serious about it given the number of conditions that have been created.
I'm hoping they do a standalone next-gen only release for Pikes Peak so we can get a glimpse of the future of GT earlier than having to wait for a whole new GT game. They can then really push the geometry and track details, sound and physics to the next level. They are probably getting limited in size of game if they have all these baked lighting tracks on PS4 for GT7.