MapNav 2 has been around for a while now. Will it continue to be supported?
As Alien pointed out, you can easily see update dates on the Asset Store. I also keep a changelog in the Announce section of this forum. The MapNav specific one is here MapNav 2 updates
Will it continue to be supported?
It is supported. “Last update” dates means nothing for some assets. All it tells you is that no one found a problem needing fixing for a while. Please report if you found a bug.