No, this is all just a wrap up for Space Empires IV. Although SE:V is due around the end of the year, I'd hazard to guess it won't be out until spring. So we need to keep busy until then.
This is not really a major overhaul, just a few key changes that will have a big impact. Plus, we are also considering setting up the mod in such a way that'd be easy to transfer to SE:V right away when it's out.