Of course there is always the option to manually download the latest file from and then manually replace and update the Edge Application. However since applications tend to have security fixes and bugfixes it can be a good idea to keep the source Application somewhat up to date as well. So what does this mean and it is a problem? Well not really, if it is allowed to auto update it will update itself as soon as it is deployed or if allow auto update isn't selected but updates are available via WSUS/CM it will eventually get to that version. The MSI file for Edge Chromium and a PowerShell file that will handle the installation. So once created it will download two files to the path that was choosen during the wizard. However once this package is created it will always install the version that was chosen and 'latest' only means the latest version at time of creation. Here there is also an option to select that once the browser is installed that it will auto update itself. In Microsoft Endpoint Configuration Manager you can create an Edge Application using a Wizard that will download the latest (or a specific) version.

Upgrade edge to latest version