The understanding when I stopped going, 4 years ago was:
When paradise is established there will be a thousand years of life without Satan and his demons, they will be abyssed (I don't think that's a word in the dictionary but it made sense to me). Then Satan and his boys will be released from the abyss for one last attempt at tempting humans. Satan and the boys will be somewhat successful because the ones retaken by Satan will number as the grains of sand. Then, Satan, his boys, and all those tempted will be destroyed by God. The rest, still alive, have free will but without the wicked temptations. They will be educated about what just happened, God's sovereignty and all that, and they will just toe the line evidently (to use a phrase the bORG often uses in their propaganda) because they know if they don't they will be ZAPPED.
So the question
Is it really free will if they know the consequence of their decision is total annihilation?
To what extent is free will really free?