*Possible plot spoilers*
In the new Arena mag, Eva Green apparently spills the beans on BOND 22. We've heard it was going to be a direct continuation - well it's a REAL continuation (this was posted over at that *other* Bond site as a summary of her comments in Arena):
She said the film is a direct continuation in terms of story as it revolves around a dark secret Vesper has. Something about her lover being tortured or something, this leads Bond to his next mission. When asked if she would return in flashbacks she says that Vesper will likely return on a computer, a pre-recorded message by a web cam on the internet.