I just started writing the finale. Now I'm not saying it will be finished any time soon (as I also have something a bit different on my plate currently) but I am saying it is coming.
FFG might be hiding the facts about what is to come so I hope this counts as good news. The current process of LFX is somewhat in hiatus (if you would like to help us we welcome you with open arms) so it might be possible that this will be published as a separate/additional adventure. Who knows?
Any of you who have played, GMed or read through Wanted (LF8) and Hand of Glory (LF9) post your comments here, at StS or send them to me at firstname.lastname@example.org. I'd be glad to get some pointers of what you think will be happening in the finale.
A disclaimer though - I've not played WFRP since last summer so I do not own Hero's Call or the Enemy Within. Any additional rules provided in them are out of the window. Unless you can convince me to buy them.
Good games for everyone!