code_geass ◾ ◾ Spoiler for episode 24 & 25

Cut for spoilers! ^^

Confirmed ones:

-Suzaku knows about Zero's Geass; V.V. told him. No mention of Zero's identity so far (Animedia and Hobby Japan);

-Black Knights will take over Ashford Academy

-Nunnally will meet V.V. (FO)

-Nunnally will finally take action after "finding out about things";

-Sayoko is as strong as Suzaku; (Don't ask me...)

-There is a hidden meaning behind Nunnally's phone call

-"Nunnally shares the same blood as Lelouch";

-Nunnally may have known all along who killed Marianne

-Suzaku will get into a pinch, but something or someone will save him;

-Suzaku may end up in a living hell -- "Suzaku won't be able to die even if he wanted to" and "Suzaku's future may not be a happy one"

-The Live! Geass will be triggered

-The Geass on Darlton will be triggered

-There will be a showdown between Cornelia and Zero

-Lelouch, C.C., Kallen and Arthur will survive the 1st season. No mention of the others

-Rivalz will be "really cool" in episode 24

-almost everyone will get their chance to shine in the last two episodes

Rumoured ones:

-Suzaku, consumed by hatred and his lust for revenge, will raise his hand against Cecile in episode 24. He won't hit her, but it'll be enough to shock her

-Cecile will die in episode 25

-Shirley will end up crippled in an "accident" after protecting Nunnally - this "accident" has been speculated to be caused by Nina and Ganymede

-Kallen's mother will die during the attack; this will lead to Kallen leaving the Black Knights in season 2

-Orange will head for Ashford Academy; the students will ignore his request to see Zero. Angered, he will get into his Crab-like mech and start destroying the school

-Nunnally will be "abducted" by Suzaku and taken aboard the Avalon; she will meet V.V. there

-Milly, together with Sayoko, will "sell out" Ashford Academy by opening the gates to the Black Knights ut will eventually be forced to evacuate all the students via underground routes

-Gawain will come out on top in the match against Lancelot (Suzaku's pinch), but end up destroyed

-Guilford will die protecting Cornelia from Darlton; Darlton will commit suicide

Got them from here! ^^

Thanks to

lisa_patrikevna we know now, that the spoilers come from Celiss Galvea from GameFAQs.
That means, most of them are true, only the ones printed in bold are not necessarily true!
For more information look here and here!

Thank you!

Also thanks to her we got confirmed spoilers about Viletta: ^^

- She will regain her memories, but will still remember her time with Ougi (FO)

-There will be soap opera-ish developments in the Ougi / Villetta relationship (Kawaguchi)

Another note: (Sorry)
The spoilers printed in italics are most probably true! ^_^