Bhagavad Gita, Chapter 8, Verse 16

All the worlds, O Arjuna, including the realm of Brahma, are subject to return, but after attaining Me, O son of Kunti, there is no rebirth.

Even the highest material realm described here still isn't described as the real, final destination.

This draws a real, sharp line. No matter how exalted a material realm might be, it's still subject to the same cycle, only one destination, genuinely distinct from all the rest, is described as actually final.