To recap, Prusa's solution to companies stealing its and others' work is the open community licence (OCL), a set of usage terms the company designed to give it and others publishing works under it a more effective stick to beat violators with.
The OCL v1.1 update introduces a plugin system for adding additional clauses without cluttering and confusing the simple core license, as well as tightens copyleft. The company announced the update in a blog post that also signals the introduction CERN OHL-S v2 as an option on Printables.