AVLView being a cloud based SaaS (Software as a Service), your accounts on webapp get automatically updated. Upgrades are done at scheduled times, when the app usage is forecasted to be at the minimum level.
Usually, a 24-48 hour notice would be given to all app users. Well, you wouldn’t be able to track your vehicles live during upgrade period. However, you’ll not miss out any tracking data as all would be stored in history.
Not all the releases may contain new features, but bug fixes. Once an update is made, you need to clear your browsing history/cache memory to remove all the previously loaded page versions and get the app loaded as a new page with the updates.