Currently Studio Pro provides a function to check and update Widgets from the Appstore. A function to check all items in the Appstore is really needed. This function should also take in account if the item is suited for the particular Studio pro version.
I use a package from Mendix “Native Mobile resources” but I never know if I should upgrade. Same for other packages.
App store modules do have version numbers and framework version information. Should be all that's needed to check for available updates.
Update for widgets are supported trough https://docs.mendix.com/refguide/project-menu#update-widgets
However it misses the update and modules. A problem with modules is that they can not have a version number. Would love to see Mendix adding that feature.