This Ma’amar has three levels:
1) The idea of Shamayim and Aretz in ruchniyus, it represents 1) Torah and Mitzvos, 2) Yisachar and Zevulun, 3) The two parshiyos of Krias Shma, 4) Hafrasha and Haram, 5) Yerios and the rest of the Mishkan.
2) The “new” heaven and earth that will be Leasid lavo.
The Rebbe explains what ‘new’ means. No level of light that shone before (in any world) can be considered “new” only “Renewed”.
For it to be “new” it must be from Atzmus. From Atzmus there will be a new Heaven and earth, including Torah Chadasha.
3) But Neshamos Yisroel (their Zera and Shaim) will be the same. Because they are the ones who cause the newness and they are themselves the Etzem (now) already.
