If it's just getting scanned last week then it makes sense that there would be no in-game data yet. And it's unlikely we could expect it until next year at least.I do think a track will come to GT7 in May or June.
But we’ve really had no indication from in-game data Motegi is imminent. There’s a list doing the rounds and, as far as I’m aware, Motegi hasn’t been mentioned.
I’d be happy with a test track or some kind of online meeting place like we saw with the Top Gear track in GT5.