In online software archives, “Final” typically precedes “Multilingual” to indicate that this is the that shipped to manufacturing. For version 17.1, “Final” means:

Adobe Illustrator CC 17.1 Final Multilanguage: [insert download link]

: Users gained the ability to create their own specialized toolbars. By dragging and dropping frequently used tools into a new, floating, or docked panel, designers could declutter their workspace and focus only on the tools they needed for a specific project. Enhanced Pencil Tool

The "Final Multilanguage" designation often refers to the last stable build of this specific version, which remains a legacy favorite for designers using older hardware or operating systems like or Mac OS X Mavericks . Key Features of Illustrator CC 17.1

Be aware of what you will miss if you stick with 17.1:

Keywords integrated: Adobe Illustrator CC 17.1 Final Multilingual, download, install, system requirements, features, multilingual interface, legacy software.