Dino Cattaneo has thrown in the towel regarding X-Plane development for now due to (perceived) inability to offer adequate platform support.
As a parting gift, he has made his only XP11 product, the SIAI-Marchetti S-211 (and M-311), freeware.

Mille grazie, Dino! And thank you for the fair gesture. This is a shining example among all the outdated, out of active support, yet full priced products that still roam the X-Plane stores like zombies.

Read the original blog post and get the aircraft from here: http://indiafoxtecho.blogspot.com/20...e-release.html