If you choose the option to updates automatically, Flash will check for updates on a daily basis and install them in the background.
When you download and install Flash 11.3, the installer will offer you to have Flash automatically update, only notify you of available updates, or never check for updates. To tackle this and work to keep most people keep up-to-date with Flash, Adobe has implemented this new background-updating feature.
Apple: Retina display MacBook Pro starts at $2,199.
