Militancy is spiking in Indian occupied Kashmir and even overflowing to Jammu now. There are rumours that Pakistan has returned to it's original master for alms and they are making Pakistan ramp up militancy to destabilise CPEC/BRI projects in the region. That's the reason for the thaw, there's a new frontier opening up for both India and China. I highly doubt any similar thawing between Indian and Pakistan is possible in the near future. Or any future, for that matter, where the military establishment in Pakistan hasn't been decapitated.