Does Unity 4.0 support ActionScript Workers for FlashPlayer 11.4?

The Adobe release notes list worker threads as available in 11.4. Does (or will) Unity support this concept?

Flash Player release notes:

In the state 11.4 delivers workers, supporting them from Unity Flash is not easy or per-se beneficial. In 11.5 this changes. However, this does not mean that we will be able to expose c# threads.