Hello there!
We’ve released Strapi 3.3.4 with several bug fixes and enhancements (as usual, here’s the changelog).
Also in this version, a categories selector for dynamic zone is added. Many thanks to @Norbz (Norbz (Nicolas Chesné) · GitHub) and @misterdju (misterdju (Boudringhin Julien) · GitHub) from La Chose for the contribution! 
Stay tuned for more updates!
Cheers,
The Strapi team