Even after reaching the Brahmaloka, the realm of the Creator, all cannot achieve total liberation because of their remaining Vasanas for exhausting which they have to take rebirth. But to those who rediscovered their Essential Eternal Nature and realized themselves to be the One, All Pervading Self (after attaining Me) there is no rebirth, the Samsar, the plane of limited existence.

Complete liberation, attended by cessation of birth and death, is possible only for a man who has realized his identity with Brahman. All other worlds, whether sub-human or super-human, are places of transitory enjoyments, where men departing from earth, experience the fruit of their actions and after exhausting such fruits are re-born on this earth.

But one can directly attain liberation from re-birth through love of God alone without waiting till the end of the cosmic cycle.
ALL THESE WORLDS ARE LIMITED BY TIME

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O Arjuna, all the lokah, worlds; abrahma-bhuvanat, together with the world of Brahma-bhuvana is that (place) in which creatures are born, and brahma-bhuvana means the world of Brahma; punah avartinah, are subject to return, are by nature liable to come again; Tu, but; kaunteya, O son of Kunti, na vidyate, there is no; punarjanma, rebirth; upetya, after reaching; mam, Me alone. Why are all the worlds together with the realm of Brahma subject to return? Becuase they are limited by time. How?