I'm quite dubious about Leon and Ada both having playable scenarios from RE4. I mean if there's one game in the series that was considered sure not to be part of UC, it's definitely RE4 (not to mention that the events in UC are all supposed to take place before RE4)... Besides, you'd think if they went all the way with RE4 they'd also have included RE: CV. I'll say it now though: if RE4 is indeed included in UC on top of everything else, I'll be very impressed.