AFAIK most people can not handle it.
If, say, 25% of whole population on earth can handle the truth, it would have been released already.
The truth is far more bizarre than it seems to be.
My guess for current plan is to expose everything on earth first. This basically includes EVERYTHING that can be discussed here without a "oh ayyimao religion shit gtfo" reaction.
If everyone seems to handle these well, we can expect to have a more detailed follow-up pretty soon.