The OP and ED are titled...

[lulu-quality.livejournal.com]

OP: 02~ｵｰ･ﾂｰ~ (02~O-Two~) - Orange Range
ED: ｼｱﾜｾﾈｲﾛ (Shiawase Neiro) - Orange Range (English title is probably Sound of Happiness)

Source: http://or.spicemusic.jp/news/news.php?id=ccb2d33d3f2b61b7fc8ffd22d8eaaad8

EDIT: Forgot to add that no release date has been announced yet for the songs.

I wonder why there are so many bad puns (insert-letter-here)-2 names in Geass? C2, V2, R2, and now O2. Also there's L2, N2, S2, and K2 if you count Lelouch, Nunnally, Sayoko (Shinozaki), and Kagesaki Kizuna Kallen Kouzuki. Hmmm.......it's probably not relevant.

Comments

[eire-endellion.livejournal.com]

Nya~ Happy! Is there anywhere to hear these songs?
*likes Orange Range but has troble locating their songs*

[lulu-quality.livejournal.com]

The only way to hear a clip of the OP is by watching some of the commercials for R2 (which I'm presuming, showcase the chorus). If you want to hear some other Orange Range songs, I recommend these to start off:

Asterisk
http://www.youtube.com/watch?v=VsIbDLBo5S0

Hana
http://www.youtube.com/watch?v=QcesTWAS2gg

Ikenai Taiyou (I warn you, the PV is really wacky)
http://www.youtube.com/watch?v=F4zzBZS3fS0

Kizuna
http://www.youtube.com/watch?v=xrUHs6Zoux0

Sayonara (Warning: Reeeaally long PV. It's also depressing.)
http://youtube.com/watch?v=b3eMLrDB-Yw

If you want to hear more Orange Range songs, look up "Orange Range" or "オレンジレンジ" on Youtube. That'll get you far :)

[eire-endellion.livejournal.com]

Ty! ^^ I've already heard Asterisk, but not any of the others ^^
*goes to listen*

[atemu-mana.livejournal.com]

02! So many 2s.... The 2s and the Oranges, lolz.

Thanks for the info. I'm just wondering what is the name of the song for the trailers. Wonder if it's just promo song? Waaaai, if it's promo song, I still want it full, XDD.

[aida-furion.livejournal.com]

Maybe the staff of Code Geass love orange and number 2.

O2: Oxygen? Or maybe they mean there are two Orange-kun? Just kidding :D . Anyway, Thx 4 info, lulu_quality-san.

[darksage29.livejournal.com]

The titling of O2 reminds me of their titling of asterisk... 'tis weird.

[sevoth.livejournal.com]

Obviously, the Geass scientists were working on Orange-kun, so they gave him the new name O.O. That's why he's always screaming "My name isn't Orange-kun!" at Zero.

Too bad it's an O, though. That destroys the whole theory that the staff is going along the keyboard (C.C., V.V., and then B.B.) Why couldn't Zero have called Jeremiah Blueberry-kun or something?!

[tenshi789.livejournal.com]

So if Orange Range are doing the OPs, then I'm pretty sure that the music in the advertisements were not by them. So I wonder if the song in the advertisement will play a part.