Sorelle;
FoV and DKS should be released in October (English being one of the non-German releases
).
Jereth;
If you didn't save during the last fight, you will need to redo it. I have a save before taking out the memory of Zandalor (he lasted the longest), as well as one before entering the Hall of Echoes, in case I want or need to revert back for some reason.
Presumably you will at least keep the equipment and inventory you have with you. Nothing has been mentioned about the battle tower or items in the chest, though I don't see any reason for cutting off access to them.
