The new version of 3d software for artists: UI became simpler, work in program is faster and more stable.
Polybrush modeling and sketch techniques can be used for creature, robot, plant and even furniture modeling. Many things is much faster to make in Polybrush than in other software.
Also now there is an option of buying a lifetime license ($150) and one-year key ($25).
Before buying, you can try a huge 90-day free Polybrush trial period.
You can see the new PB on video:
https://www.youtube.com/watch?v=EV0qU4ZrzSU

To download Polybrush and watch the lessons, go to:
http://polybrush.org

If you are a russian user, welcome to Polybrush other programs courses from the author of PB:
http://www.realtime.ru/courses/polybrush/
http://www.realtime.ru/courses/digital-painting-advanced/