Since Adobe has moved to the Creative Cloud model, finding official patches for CS6 can be difficult.
This text appears to be a for Adobe Illustrator CS6. Here’s a breakdown of what it indicates: Adobe Illustrator CS6 16.0.0 -32-64 Bit- Updated Patch
Since Adobe no longer provides automatic updates for the perpetual version of CS6, users must often manually apply these patches: Since Adobe has moved to the Creative Cloud
Adobe officially retired the Creative Suite line (including CS6) in favor of Adobe Creative Cloud (CC). While legitimate serial keys for CS6 still exist, Adobe has disabled the activation servers for many older versions, making legitimate installation difficult without prior authorization. Adobe Illustrator CS6 16.0.0 -32-64 Bit- Updated Patch