What about those who will be recreated for punishment. Will that be in the Planet of the Non-Eternals?

Not on the Planet of the Non-Eternals. But I do not know where... Rael did not specify.

The Elohim gave Rael more information than what is contained in the books... but they asked him to keep it secret for the time being. Eventually, Rael will let us know, when the time is right.