No, no spoilers have said that. There has been a complete lack of info regarding her fate, hence all this wild speculation.
We have been given nothing to pontificate on. Nothing to confirm or deny our worse fears, absolutly nothing. The only hints we've had are speculations based on what we have seen in the new OP and ED which all hint at her changing sides.
The only concrete thing that has been said was a single paragraph in the latest Newtype which said something to the effect of:
*In big blue writing* As for Kallen's release?
*small print* Even though Lelouch has promised to save her, her live lies in the hands of Britannia. A meeting with Suzaku will test her resolve.
Thats it, and even IT is ambiguous.