The Upgrade All Dialog allows you to confirm or cancel the upgrade of all installed packages for which there is an upgrade available.
It is shown from the iconbar menu, the main window menu and from a button on the Update Lists windows which is enabled if upgrades are available.
It shows the following information
Press the Upgrade All button to install these packages and any dependencies and remove any clashing packages. This will then display the Commit Window which will show the progress of the upgrade and report if it is successful or not.
Press the Cancel button if you do not want to go ahead and upgrade these packages.