There hasn't been any reaction from India on the development but it could be considered as a positive development in the case.
Pakistan Army has said that they are considering legal options to review and reconsider Kulbhushan Jadhav's case. In a tweet, Pak army spokesperson Major General Asif Gafoor said, "Various legal options for review and reconsideration of the case are being considered. Final status shall be shared in due course of time."
There hasn't been any reaction from India on the development but it could be considered as a positive development in the case given that Pakistan still has to fully implement the International Court of Justice's order.
Earlier this year, New Delhi got a major diplomatic victory at the International Court of Justice with the world court calling Pakistan to "provide Indian consular officers access to him in accordance with Article 36 of the Vienna Convention on consular relations."
On September 2, India got first consular access for Kulbhushan Jadhav in three years with Indian Deputy High commissioner (DHC) Gaurav Ahluwalia in Islamabad meeting him for two hours. The Indian diplomat found Jadhav under "extreme pressure to parrot a false narrative to bolster Pakistan’s untenable claims", according to a release issued by India's Ministry of External Affairs.
Pakistan Army spokesperson called reports of amending Pak Army Act, to give Kulbhushan the right to appeal in a civilian court, as incorrect. Earlier in the day, Pak government sources hinted at the amendment of the act under which no appeals can be made under civilian court.