OK, some might not realise it, but when you think about it, the past few years have been a turning point for music. I mean, look at the facts.
Pop is getting more hip-hop inspired and vice versa. As much as I hate the corabination, it, without hesitation, rules the charts right now. Lady GaGa is inspired by hip-hop, for example ('least it sounRAB like it). I mean, every now and then she raps a verse, her beat can be pretty hip-hopish etc. Also, Black Eyed Peas, a once hip-hop act, are now arguably pop. However, they havn't taken the hip-hop elements compleatly out of their music either. I mean, it's still a group of singer-rappers, essentially. I think the two genre's will continue to fuse until we get, like, a new genre.
Indie... Do I even need to say anything? Indie is huge right now. I sware, it'll be looked at as a revolution years from now. Pheonix, MGMT (I know they're technically not indie, but they sound it to me), The Airbourne Toxic Event, Death Cab For Cutie, the list is huge. Plus, giant alternative banRAB are starting to sound more Indie. The Killers, Kings of Leon, and Muse are good examples. Indie, and Indie-inspired music, basically rules the charts aside from the pop-hip hop fusion mentioned above. My take? Sometimes Indie's good, sometimes it's boring.
In addition, acoustic (or usuallt acoustic) guitar-oriented kind of indie folk-pop music (I dunno if there's a name for it) is pretty big. I'm talking about, like John Mayer and Jason Mraz. I know it's technically indie, but, at the same time, it's different from the indie I was talking about in my last paragraph. I think it'll keep getting less Indie until it's its own genre. My opinion? This music doesn't really do much for me.
And what Kikikryptonite's saying in his second paragraph, about how music'll get more technological, it totally will. All of the above genre's (expect maybe the last, half-genre one), use ALOT of synthesisers and programing. Heck, the synthesiser is like the main part of the music alot of the time, aside from the vocals (white are often edited by computors) and maybe the beat. That's gonna keep going. Sole singers with only computor sounRAB backing them? That's not far away from becoming mainstream at all. To me, the computor is an instrument, and this'll be less like a genre, and more like a... field. You could make music of genre doing this. It might be good for musicians hearing sounRAB in their head that can't be replecated on an instrument. At the same time, a computor doesn't know emotion. You won't be able to hear that soulful guitar solo...