I'm still taking this with a grain of salt... I'm not really interested in either character.
To be honest, though, people have requested Roy for so long, and if this IS true, I'm glad to hear it for them. (Though I really want Young Link to have a spot in the Smash 4 Roster as well. At least an Alt Costume for Toon Link? Please?) I don't really see him as a wasted spot... he might control a lot like Marth and Lucina, but he still had a lot of different quirks in my opinion. Some attacks are stronger, some are lacking. In the end, it's up to them how he turns out.
Ryu came out of freakin' nowhere for me. I think he'd be a breath of fresh air for Smash, and he IS an iconic character. So, I'm all for it.
I think the thing a lot of people are missing, though, is the fact that if this is true and these characters are to be included in Smash 4, then Nintendo may have gone back on their DLC stance. We knew about Mewtwo, Lucas and the Mystery Poll Character, but these guys literally came out of the woodwork. It's no secret that Smash has a pretty large following, so I don't see any reason why Nintendo wouldn't try to capitalize on it... and maybe throwing these little tidbits of info our way to find is a way to gauge response.
In any case, Smash is growing with the addition of (at least) 3 characters and I couldn't be happier about it.
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Still want Geno, Rayman and/or Banjo and Kazooie for Smash 4. I can dream, OKAY?!?