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

[aquapatty.livejournal.com]

My friend who does pretty well with Japanese just confirmed to me that Rollo is indeed a Lamperouge. As well as that, there was something along the lines of him telling Lelouch to die or something like that.

[firebird-88.livejournal.com]

O_____________O Dear lord, Lulu's got everyone against him!! Where's C.C. when you need her? D:

[ashura-sama.livejournal.com]

As well as that, there was something along the lines of him telling Lelouch to die or something like that.
Hmmm... I had missed that one. If that line is indeed Rollo's, he knows about Lelouch's Geass. Interesting...

[lulu-quality.livejournal.com]

I think that line actually might be Suzaku's, not Rollo's.