Coelocanth: No one but GOG staff would be able to confirm that, but it's generally a good bet that licensing issues are the reason any particular game is not here.
orcishgamer: And it's worldwide licensing, i.e. if they cannot get the worldwide rights, GOG does not sell it.
Well, shit. I was hoping they would release them at some point, but looks like my dream just got thrown out the window.
Although, the CD-ROM copy of SoF II I own is from the UK, under a re-release label. So maybe all hope is not lost forever. Honestly, the main reason I want them to get released is so I can get a proper working version of the first game. Apparently if you delete the contents of the game directory without properly uninstalling the game from your computer, it will never allow you to reinstall/uninstall it.