In this talk I will give an overview of our recent developments in the theoretical description of the event shapes, and will discuss the results obtained in recent analyses for the determination of the strong coupling constant. In the massless case I will focus on thrust and C-parameter, showing results for resummation at N3LL order plus three-loop matrix elements, and the analytic treatment of power corrections. As for massive event shapes, I will discuss the novel theoretical treatment of secondary radiation of massive quarks, and also the challenges to incorporate primary production.