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Question on when Summer '21 hits the pre-release nodes
Question on when the next release hits the prerelease nodes. I have a prerelease org I've been using for a while. In Summer '21, the SLDS styles with "--" are supposed to be removed and the styles with "_" must be used instead. I loaded a VF page in one of my orgs running on a prerelease node. I see items like ".slds-tabs--default" in the sheet in addition to items like ".slds-tabs_default". I would think that indicates either Summer '21 as not fully hit this prerelease node or that the change is not exactly as was documented; this change was announced for Summer '21 back in the Winter '21 release notes.
As per Summer'21 update notes, Pre-Release Org’s will be released and available on the 15th April. Check below reference for more details.
https://developer.salesforce.com/blogs/2021/04/get-ready-for-the-summer-21-release.html
Hope this helps...
Thanks,