Clock button beside "Publish changes" in 5.7

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I thought this button is "When will this version be published" since first I saw this design, but it seems "When the page should be viewable".
https://github.com/concrete5/concrete5-5.7.0/issues/265...

This misunderstanding is my mistake, but I think this user interface creates confusion... Why this settings is not in "Page Settings" panel?

hissy