Is It The End of the World as We Know It?
The new volume of Luther’s Works (vol. 58) has a good amount of teaching on the end of the world. On pp. 163-170, Luther speaks strongly from Romans 8 that this present creation will be renewed just as the bodies of Christians will be. “There remains hope, which we possess together with creation…” Of course, he still says in the same sermon that with our resurrected bodies we will go to heaven. Also, he mentions plants and minerals as participating in this renewal, but is silent about animals. However, in another sermon in the same volume (pp. 133-147), Luther says that the entire world will be destroyed, will die, and will be raised again, even that it will be obliterated, etc.The fact is, Luther could say both things: that the creation will be obliterated, and that the creation will be renewed. He seems to have held to a renewal and transformation of this earth, but only after it has been completely and totally destroyed, maybe even annihilated.
By the way, if you go to the link for the book, you will be able to take a look at a substantial sample, via PDF file. Check it out.