At the end of Dreamfall, what is the fate of April Ryan and Zoe Castillo?
Solution 1:
Unfortunatly there is some speculation as to whether there will be a sequel. The head writer Ragnar Tørnquist seems to be very involved in getting Funcom's latest offering The Secret World MMO developed and launched. He has however indicated that an episodic format of Dreamfall Chapters is floating around at Funcom. I enclose an excerpt of what he said as his blog seems to be down to link to:
Nothing major is currently happening on Dreamfall Chapters. The people who will be involved when it does happen – myself included – are tied up in other projects, primarily The Secret World. TSW will continue to be my (and their) primary focus for a while longer…but that doesn’t mean nothing at all is happening with Chapters. It just means that it’s not (at least not officially) in production – for now.
Solution 2:
Lady Alvane could also be Zoe:
Remember how she says at the very end of TLJ that it had been a long time since she remembered "April Ryan"? Unless she is refering go herself in third person, it could be that it's someone else, talking about april.
Remember how Crow tells Zoe "From now on, I'll be your sidekick" after both of them are mad at april for not wanted to help them out? In that last scene from TLJ we see him in Lady Alvanes house.
Solution 3:
Yes, there's at least one hint to the fate of April in The Longest Journey.
While it's never explicitly stated, but Lady Alvane, (the mysterious old woman who tells the story) appears to be April herself. At least if you take into account that she knows the story of April very detailed and that Crow is with her, and as it seems he was for a longer time as he asks "You don't plan to go on an adventure again, do you?" (or similar) at the end of The Longest Journey.