The 2015 release of Photoshop introduced significant performance improvements and the expansion of Artboards—borrowing a concept from Illustrator to allow UI
"V3.3" does not correspond to an official Adobe CC 2015 version number; the actual updates for that period were typically labeled as CC 2015.1 (November 2015) or CC 2015.5 (June 2016). Official CC 2015 Release Features If you are looking for information on the legitimate Adobe CC 2015 updates from that timeframe, key features included: The 2015 Release of Adobe Creative Cloud Is Here Adobe Creative Cloud 2015 V3.3 Master Collection -March
Many unofficial "Master Collection" ISO files have been flagged as containing , including trojan downloaders and suspicious scripts. Version Mismatch: Adobe Creative Cloud 2015 V3.3 Master Collection -March