Assuming you are referring to the Lightroom Desktop app, "versions" are still there but now have a dedicated icon on the right-hand edit toolbar (or you can use the Shift+V keyboard shortcut). See screenshot:
Assuming you are referring to the Lightroom Desktop app, "versions" are still there but now have a dedicated icon on the right-hand edit toolbar (or you can use the Shift+V keyboard shortcut). See screenshot: