when can we expect jquery 3.6.0 in webflow?
Version 3.6.0 did not have any security fixes and changes were minor (see changelog).
Webflow is very slow on updating core files. Took forever it seemed to get to 3.5.0 and that had security fixes. Curious, are you experiencing a specific issue with 3.5.1? If you are I recommend a trouble ticket to put it on the dev teams radar.