Decided to check in on these. Pale yellow color. Nose: faint quince, strongly floral (hyacinth?), some mineral notes.
Palate: stone fruit, mineral, citrus peel finish. Some notes on cellartracker have commented on the sweetness of this wine, and while the residual sugar is noticed, IMHO it is needed to balance the prominent acidity, which is perceptible separate from the fruit and mineral flavors. The acidity integrated with the flavors on the second day after opening.
Comparing this with the 2008 version from memory, that bottle had less noticeable RS, with a dryer, more mineral character, still brisk but better integrated acidity. While I haven’t thought of Schlossberg Rieslings typically aging well as long as Mann’s Furstentum, or some Schoenenbourg, or Geisberg/Osterberg wines, Peter Weygandt says that these two vintages should go twenty years: who am I to argue?