Adobe Photoshop CC 2015 (specifically version 20150529.r.88) was a milestone update released in June 2015. If you are looking at a "repack" version, you're likely dealing with a modified installer designed to be easier to install or pre-activated. Key Features of the 2015 Release
Portability: Some repacks are "portable," meaning they can run from a USB drive without a full system installation. Technical Requirements for 64-bit Performance adobe photoshop cc 2015 20150529r88 64bit repack
This specific release introduced several modern workflows that remain central to the application today: Adobe Photoshop CC 2015 (specifically version 20150529
If you are setting up a retro workstation or need a reliable editor that doesn't require a subscription check-in, this 64-bit repack remains a viable and powerful option. The repack version (20150529r88) suggests that this is
Recommended workflow: Install in a Windows Sandbox or virtual machine first. Disable your host’s network during install to see if the repack tries to call home.
Introduction