I remember the rumor too. While I'm still on the fence about that, I mostly think Alicia just grow up from those days. She was only like 19 or 20 yrs old when she first came out. She's in her 30s now. Maybe she just outgrew her old tomboyish style.
I see this is going to be attached to Alicia Keys until she takes her last breath; there hasn't been a point in time, since she came onto the scene that someone hasn't thought she was at least bisexual. So, doesn't matter how many times she says its not true, or how many husbands or babies she has, I guess it is what it is.
Nevertheless, I don't see why it even matters at this point, because it's not going to change what she's been able to do in the world. People seem to still be kind of dragging their feet on believing that gays and bisexuals are just people like everybody else, but I will be glad someone outing themselves or someone else isn't that newsworthy.