"Is Star Control II going to be"
What do you mean by "going to be", it was released in 1992.
Surely you are asking about the new planned Star Control games. One which will have the plot set between Star Control 1 and 2, and even later another game that would be a continuation of Star Control 2(not Star Control 3). The former might be something like 4x, we don't really know.
This is the forum you are looking for - https://forums.stardock.com/forum/1053