In Jainism, there is a belief that many significant figures from Indian epics have various destinies in future lives as described in Jain scriptures. According to Jain texts, Ravan (Ravana), the king of Lanka from the Ramayana, is considered a great but flawed soul due to his karmic actions.

Jain tradition holds that Ravan, despite his knowledge and power, committed acts that generated negative karma, such as violence and attachment, which preclude him from spiritual liberation or the attainment of Tirthankarhood in the immediate future. However, Jain philosophy emphasizes that every soul has the potential to become a Tirthankar through right conduct, knowledge, and faith (Samyak Darshan, Jnana, and Charitra). The timeline and possibility of any soul, including Ravan, eventually becoming a Tirthankar depend on the soul's journey through countless lifetimes and the purification of karma.

Specifically, traditional Jain texts do not mention Ravan as destined to become a Tirthankar in the current or immediately following cosmic cycles. Instead, they often focus on the soul's journey and the importance of right actions and intentions.

In summary: Ravan is not mentioned in Jain scriptures as a future Tirthankar. However, Jainism teaches that every soul, with the right effort and purification, has the potential to attain such a state over countless lifetimes.