I don't know. In recent years, Gearbox hasn't exactly had a great track record when it comes to their handling of someone else's IP. Plus this looks like it'll be a traditional planet bound RTS, which to me spells "Homeworld in name only."
As far as the HD versions go; as I understand it they legally can't do anything with Cataclysm as it was originally developed by a third party. No big deal IMO. While I thought it was OK, it always had a certain apocryphal feel next to the other two games.