You will get it through Windows Update. Install at your convenience.
This update will only be a small enablement package. The new features have already been installed and need only to be activated. You can see the packages with this Powershell command:
(dir c:\windows -Filter 26h2.* -ErrorAction SilentlyContinue -Recurse).Fullname
Finally allows you to move the start menu to the left. Or the task bar to any side you want.
Tried it for a few seconds. Then switched back to bottom and centre. Retraining my muscle memory is too much effort now.