Rockshox Ultimate SID, Pike, Lyrik & Boxxer get smoother, more controlled - Bikerumor
https://bikerumor.com/2019/04/04/rockshox-ultimate-sid-pike-lyrik-boxxer-get-smoother-more-controlled/

Rockshox Deluxe rear shocks get mega negative, more inline & better controls - Bikerumor
https://bikerumor.com/2019/04/04/rockshox-deluxe-rear-shocks-get-mega-negative-more-inline-better-controls/