I think it is planned as a Keyholder did actually post that there wasn’t a tab for it at the moment.
There aren’t that many decent sampler instruments on the site that I recall and as I have Kontakt 5 & 6, I never actually bothered taking any notice of the libraries for Decent Sampler, so I may easily have missed some.
Here are the Decent Sample Libraries that I am aware of on Pianobook; Pianos
And of course the few freebies on Dave Hilowitz’s own site that you probably know about if you have Decent Sampler; https://www.decentsamples.com/
Box Violin Sustains & Swells