To answer a few of your questions....

[lulu-quality.livejournal.com]

I noticed all the speculation about whether Lelouch was alive in the second season and Marianne's maiden name.

First off, there is no actual official evidence that Lamperouge is Marianne's maiden name. Someone speculated about it and thus posted it on Wikipedia entry like Stephen Colbert's entry on African Forest Elephants. You shouldn't regard this as fact.
(Celiss from Gamefaqs confirmed this)

Finally,





Source: Newtype Romance, Asuka, and 2ch

So yes, he is alive obviously, but why do his eyes look perfectly normal? Speculate :D

EDIT: Someone uploaded the trailer for the second season on Youtube from Nicovideo.
http://youtube.com/watch?v=gvpV_X8OHw0

Comments

[liakotoba.livejournal.com]

Hmm...it could be an old sketch. Because I really can't imagine Lelouch going back to school after last season's finale. Doing so would require both Suzaku and Kallen to keep their mouths shut, and Suzaku seemed rather...unforgiving the last we saw of him.

If it's a season two sketch, then it looks like that rumor about Lelouch growing his hair out is false...

[lulu-quality.livejournal.com]

It's a new sketch from the latest issue of Newtype Romance and it's hard to tell, but Lelouch's hair is a little bit longer around the amount specified in the spoiler (almost to his shoulders). It'll probably be easier to tell once we get more promo art.