Answer

In Jain cosmology, no new Tirthankar is expected in the current avasarpiṇī period after Bhagwan Mahavir Swami.

Explanation

Bhagwan Mahavir is the 24th Tirthankar of this time cycle. After him, there is no Tirthankar in the present descending half-cycle. The next Tirthankar would come in the future ascending half-cycle, called utsarpiṇī.

Spiritual Understanding

This teaches that the path shown by the Tirthankars is timeless. Even without a new Tirthankar appearing now, the Jain path of right faith, right knowledge, and right conduct remains fully available.

Takeaway

If you meant “which Tirthankar will come next,” the answer is: none in the current era after Mahavir Swami.