I'm happy about this, super happy about it actually, but some of the comments in this thread are kind of getting to me, I think.
In regards to it being shoved down peoples throats, or being made overt, I just want to say that when people say this it seriously sucks. As a gay man, my relationship with my boyfriend is exactly the same as a straight person's relationship with their partner. As such, in a story when a character mentions that they find another character of the same sex attractive, or when a character is hinted at being gay/bi, it really isn't any different than a straight character saying they find someone of the opposite gender hot and it sucks that even when a character's same gender attraction is hinted at in even the SLIGHTEST, all these people talk about how it's being shoved down their throats and it shouldn't be a big deal.
If Darius was confirmed to be gay in an offhand line, he would still be the same character. If Nidalee was confirmed to be a lesbian in a side comic, she would still be Nidalee. If Garen was confirmed to be bisexual and even stated plain as day, "I'm bisexual.", he would still be the Demacian Justice after the fact.
Representation of gay characters (and lgbt characters in general) IS a big deal to a lot of players who fall under that label (including myself), because if you look at media that portrays us, we tend to be stereotyped, or treated as a joke, or the character's ENTIRE personality is that they are queer. Stuff like this matters a lot to us because it normalizes lgbt people as just being....regular people.