Same waiting time as the Golf then, as confirmed in the R-Line thread – people wait between 11 and 13 months currently on the Golf.
The Tiguan had the occasional wait time of 43 weeks in april last year already (says google), so it does sound realistic.
Sucks for everyone 🙁
Prior: SEAT Ateca Xcellence Lux 1.5 TSI DSG MY19, VW Golf GTE PHEV DSG MY23
Current: Hyundai Ioniq 6 Ultimate
Next: we'll see what's available in 2028.