For whats it worth, over on Brickmerge.de (German Lego Price site) plenty sets got the "Auslaufartikel" tag, which just means "Retiring soon".
I don't know where they got that info and I also don't know if this means something or if it's complete nonsense.
Anyway here is the Link to the site: https://www.brickmerge.de/?find=Auslaufartikel
A few of the bigger ones are:
Snowspeeder, Ferris Wheel, Porsche 911 GT3 RS, Tower Bridge, Old Fishing Store, NASA Apollo Saturn V, Parisian Restaurant, Detectives Office, Bucket Wheel Excavator, Technic Extreme Adventure....