I can't answer that, but will mention this related to the PittRace april Evolve event.
Talking to PittRace a few weeks ago, they mentioned that while that event is on their calendar, that there is at least a possibility that it might not happen. According to them, this was because the final part of the North Track resurface is scheduled to occur not long before that - but it's very very weather dependent - specifically temperature dependent. There is reportedly some risk that the surface might not be ready for that specific weekend. That was just conversation with them, and is certainly not official in any way.
Talking to PittRace a few weeks ago, they mentioned that while that event is on their calendar, that there is at least a possibility that it might not happen. According to them, this was because the final part of the North Track resurface is scheduled to occur not long before that - but it's very very weather dependent - specifically temperature dependent. There is reportedly some risk that the surface might not be ready for that specific weekend. That was just conversation with them, and is certainly not official in any way.