The Shaper Tool also debuted in this version. It provided a more natural way to create complex shapes by drawing loose, freehand gestures that Illustrator would instantly convert into perfect geometric forms. Combined with the improved Smart Guides, layout precision became faster and more intuitive. System Requirements for CC 2015

Alternatively, you can also download Adobe Illustrator CC 2015 from other sources:

Another standout feature was the introduction of Linked Assets. This allowed users to link graphics across different Creative Cloud applications. When a change was made to a master asset, it automatically updated across all Illustrator, Photoshop, or InDesign files where that asset was used, drastically reducing manual rework.

2 GB of RAM (8 GB recommended) for 32-bit systems; 4 GB of RAM (8 GB recommended) for 64-bit systems.

One of the most celebrated quality-of-life updates in CC 2015 was the implementation of data recovery. If the software closed unexpectedly due to a system crash, power outage, or hardware issue, Illustrator could automatically recover your working document upon relaunch. This feature drastically reduced the risk of losing hours of progress. Creative Cloud Libraries and Stock Integration