In origin2020b, origin will download new app xml when open App center dialog if new app info comes. it is not friendly since it takes more or less 15s to finish downloading.

In origin2021, origin provide a Download Now button in app center dialog when new app info comes, customer can choose download new app info manually as he want. therefore, user does not need waiting when open App Center dialog.

once downloading is finished, new app info will be updated in App Center dialog instantly.