It's going to be Misha Glenny.
https://www.bbc.com/mediacentre/2025/misha-glenny-in-our-time-bbc-radio-4
I assumed they would bungled this. I nearly fainted at the suggestion of it being Amol Rajan. But this looks like a great choice. That assumes he'll be a natural fit and will be happy to hang around for some years at least.
Overall though, good, and looking forward to it.