If an app has been renamed and republished, and if you have already installed it with the old name, then you will probably see this message:
The "More Details" link redirects you to this wiki so you know why you received the notification. The only action on you is to restart Trados Studio so that the app in question is updated accordingly.
The reason this is needed is because the AppStore integration uses the app name as part of the process for providing updates automatically so it's important that any changes are handled appropriately to avoid duplicates.