Undoubtedly the headline feature of the 2018 release. Before this, distorting a vector character or object required complex mesh warping or path manipulation. Puppet Warp allowed users to place "pins" on a vector object and move them naturally, like a puppet on strings. This made character poses and organic shape adjustments significantly faster.
If you encounter issues during download, installation, or activation, refer to Adobe's support resources: adobe illustrator cc 2018 telecharger
Sites like ProDesignTools formerly hosted these links, but many are now inactive because the source files were taken down by Adobe. Undoubtedly the headline feature of the 2018 release