The 15.2 update (specifically released in late 2014) introduced several features that are now considered standard, including:
Designers in the mid-2010s liked the idea of carrying their preferred workspace, brushes, and settings on a physical drive to use on public or restricted computers. adobe-photoshop-cc-15-2-1-portable-32
It aims to leave no settings or files behind on the host computer. The 15
The demand for a portable version of Photoshop CC 15.2.1 stems from several perceived conveniences: adobe-photoshop-cc-15-2-1-portable-32
An improved interface for generating image assets from layers.