Is generational garbage collection enabled in Unity 5.5?

I see that Unity 5.5 now uses mono 4.4, which has the option for generational garbage collection. Is the generational garbage collection enabled? Are there tools we can use to see what the garbage collector is doing?

No. The Unity 5.5 compiler is based on Mono 4.4, but not the runtime. Get the Unity 5.5 beta now | Unity Blog