Answer

According to Jain tradition, there is not one single common bhav for all the souls of the next Chovisi. A soul becomes a Tirthankar only in its destined final birth, after having bound Tīrthaṅkara-nāma-karman in an earlier existence. So the future Tirthankars are in earlier bhavs now, and the exact bhav can differ from soul to soul. ( jainpedia.org)

Explanation

Jain universal history explains that the special karma which leads to Tirthankarhood is bound in an earlier life and then ripens in a future birth. That is why a Tirthankar is not “already” in that form long before the final birth; the soul is moving through prior births until the appointed time comes. ( jainpedia.org)

Spiritual Understanding

This shows that Tirthankarhood is the result of long spiritual purification, right faith, and noble conduct over many births. For us, the important lesson is to focus on samyak darshan, samyak jñān, and samyak charitra rather than trying to fix all future Tirthankars into one single bhav. ( jainpedia.org)

Takeaway

In short: the next Chovisi souls are not all in the same bhav; they are in different earlier bhavs, waiting for their final Tirthankar birth. ( jainpedia.org)