One of the biggest disappointments with the Galaxy S8 and S8+ was that it didn't seem to fully exploit all the power that it packed. In particular, some of its features, specifically Samsung DeX, would have benefited from more RAM. Instead, Samsung chose to play it safe and stick to conventions that is almost 2 years old by now. There have, indeed, been rumors of a 6 GB RAM model and that might still be true. You might not, however, want to buy one when you hear how much it'll cost.