The core features introduced in the 2015.5 release (which version 17.0.1 inherits) include:
: Direct installers for legacy versions like CC 2015.5.1 were historically provided by Adobe for troubleshooting. Adobe Photoshop CC 2015.5 v17.0.1 Update 1 ISO ...
: A dedicated workspace that replaced "Refine Edge," offering improved tools for making complex selections like hair or fur. The core features introduced in the 2015
: Resolved crashing issues and problems where subtools would revert to primary tools after using keyboard shortcuts. : To install older versions, you can open
: To install older versions, you can open the Creative Cloud app, find Photoshop, and select "Other Versions" to see if it remains available for your subscription. Adobe #Photoshop CC 2015 - Top 5 Features
The 17.0.1 update specifically addressed several technical issues to improve workflow:
: Improvements to the Artboards feature, including the ability to duplicate layers or layer groups into other artboards and quickly change artboard backgrounds. Improvements in v17.0.1 (Update 1)